Intel Mobile Processors

The following sections detail the specific mobile processors that Intel has introduced, starting with the SL Enhanced 486 processors, all the way up through the latest Mobile Pentium 4, Mobile Pentium 4-M, and Pentium M processors.

SL-Enhanced 486 Processors

The Intel486SL, as well as SL-enhanced SX, DX2, and DX4 processors (with SL Technology), were used in a number of laptop and other portable systems during the 1990s. The DX2 and DX4 versions are clock- doubled and tripled versions respectively, greatly adding to the speed and performance of the chip.

The following is a summary of features for the 486.

• 32-Bit RISC (reduced instruction set) integer core

• 8KB (SL/SX, DX2) or 16KB (DX4) on-die unified L1 cache

• Support for 4GB (gigabytes) of physical memory

• Support for 64TB (terabytes) of virtual memory

• On-chip floating-point unit (math coprocessor)

• One cycle per instruction execution

• 33MHz 32-bit CPU bus (133MBps throughput)

• SL Technology

• System Management Mode (SMM)

• 32-bit external data bus address range

The 486 uses a 32-bit wide (4-byte) processor data bus, which means that it moves 4 bytes per cycle on the processor bus. With a bus speed of 33MHz, that equates to 133MBps total throughput. The 486 also has a 32-bit address bus, which means that it can address 2 ³² bytes of memory, which is 4GB. However, most chipsets used with the 486 limit maximum memory to 64MB or less.

See SL Technology, p. 128 (this chapter)

Mobile Pentium

The main idea with most mobile processors is to shrink them as small as possible, which then lets them run at lower voltages; this saves power. The 200MHz and 233MHz Mobile Pentium processors with MMX technology (code-named Tillamook) were the first products manufactured using 0.25-micron process technology. Intel also made 300MHz, 266MHz, and 166MHz Mobile Pentium/MMX processors on the 0.25-micron process.

The 0.25-micron manufacturing process and Intel's voltage-reduction technology decreased the core voltage from 2.45V to 1.8V (2.0V for the 266MHz version), and the I/O interface from 3.3V to 2.5V, relative to previous-generation processors. The 0.25-micron manufacturing process increased chip speed up to 60%, while reducing power consumption (up to 53%) when compared to 166MHz Mobile Pentium processors with MMX technology on the 0.35-micron process. This reduction in voltages allows for higher speeds with less battery power use and less heat production. Typical power consumption can be reduced from 7.7W for 166MHz Mobile Pentium processors with MMX technology on the 0.35 process to 3.9W for the 233MHz processor. These improvements represent nearly a 50% decrease in power consumption.

Although Intel has largely replaced its Mobile Pentium processors with Mobile Pentium II/III/4/M and Mobile Celeron processors, the power and heat savings pioneered in the Mobile Pentium line live on in improved form in these newer processors for portable systems.

Intel also manufactured regular (non-MMX) Pentium chips at speeds of 75, 100, 120, 133, and 150MHz for use in low-end portable systems. These chips used voltage-reduction technology (VRT), which means that they draw the standard 3.3V from the motherboard, but internally they operate on only 2.9V (3.1V for the 150MHz model). Although this is not as dramatic of a reduction as that evidenced in the 0.25-micron process chips, VRT still reduces the overall power consumption and heat production of these processors. These processors are no longer being manufactured, but they will appear in older laptop computers that you might have or encounter.

Mobile Pentium II and III

In April 1998, Intel announced the first Mobile Pentium II processors. Running at 233MHz and 266MHz, these processors were also manufactured using the same 0.25-micron process used by the Mobile Pentium MMX. With a core voltage of 1.7V and an I/O buffer voltage of 1.8V, they run at even lower voltage levels than their Pentium MMX counterparts. Although at 8.6W, a 266MHz Pentium II consumes more power overall than a Pentium MMX running at the same speed, you must take into account that the Pentium II includes an integrated L2 cache, whereas the Pentium MMX, at 4.5W, does not.

To reduce power consumption and heat buildup while preserving speed, Intel redesigned the Mobile Pentium II in late 1998 to use a different method for accessing L2 cache. The original Mobile Pentium II used a 512KB L2 cache running at half CPU speed, just like the desktop Pentium II processor, but the revised design changed to an integrated on-die L2 cache of just 256KB, but running at the same speed as the CPU. By manufacturing this cache directly on the processor die, it runs at the same speed as the processor core and uses less power than slower external cache.

The Mobile Pentium III is an improved version of the Mobile Pentium II, also using an on-die 256KB L2 cache, but with several design improvements, including the use of the .18-micron architecture, core voltages ranging from 1.7V (for the 1GHz and 900MHz versions) to as low as 1.1V (for the 500MHz versions), and SpeedStep power-saving technology for the 600MHz and faster versions. To reduce size, most versions of the Mobile Pentium III use the BGA-2 and micro-PGA2 packaging. The Mobile Pentium III also supports seven clock states for a wider range of power-saving modes than on earlier mobile processors.

Table 4.3 lists the speed, manufacturing process, and voltage specifications for the Mobile Pentium II and III and Mobile Celeron CPUs manufactured by Intel.

Table 4.3. Intel Mobile Processor Specifications

Processor Voltage	Core Speed	Bus Speed	Manufacturing Process	Core Voltage	I/O Buffer
Pentium	75MHz	50MHz	0.35 micron	2.9V	3.3V
Pentium	100MHz	66MHz	0.35 micron	2.9V	3.3V
Pentium	120MHz	60MHz	0.35 micron	2.9V	3.3V
Pentium	133MHz	66MHz	0.35 micron	2.9V	3.3V
Pentium	150MHz	60MHz	0.35 micron	3.1V	3.3V
Pentium/MMX	120MHz	60MHz	0.35 micron	2.45V	3.3V
Pentium/MMX	133MHz	66MHz	0.35 micron	2.45V	3.3V
Pentium/MMX	150MHz	60MHz	0.35 micron	2.45V	3.3V
Pentium/MMX	166MHz	66MHz	0.35 micron	2.45V	3.3V
Pentium/MMX	166MHz	66MHz	0.25 micron	1.8V	2.5V
Pentium/MMX	200MHz	66MHz	0.25 micron	1.8V	2.5V
Pentium/MMX	233MHz	66MHz	0.25 micron	1.8V	2.5V
Pentium/MMX	266MHz	66MHz	0.25 micron	2.0V	2.5V
Pentium/MMX	300MHz	66MHz	0.25 micron	2.0V	2.5V
Pentium II	233MHz	66MHz	0.25 micron	1.7V	1.8V
Pentium II	266MHz	66MHz	0.25 micron	1.7V	1.8V
Pentium II	300MHz	66MHz	0.25 micron	1.6V	1.8V
Pentium II	333MHz	66MHz	0.25 micron	1.6V	1.8V
Pentium II	366MHz	66MHz	0.25 micron	1.6V	1.8V
Pentium II	400MHz	66MHz	0.25 micron	1.6V	1.8V
Celeron	266MHz-LV	66MHz	0.25 micron	1.5V	1.8V
Celeron	266MHz	66MHz	0.25 micron	1.6V	1.8V
Celeron	300MHz	66MHz	0.25 micron	1.6V	1.8V
Celeron	333MHz	66MHz	0.25 micron	1.6V	1.8V
Celeron	366MHz	66MHz	0.25 micron	1.6V	1.8V
Celeron	400MHz	66MHz	0.25 micron	1.6V	1.8V
Celeron	433MHz	66MHz	0.25 micron	1.9V	1.8V
Celeron	466MHz	66MHz	0.25 micron	1.9V	1.8V
Celeron	400MHz-LV	100MHz	0.18 micron	1.35V	1.5V
Celeron	450MHz	100MHz	0.18 micron	1.6V	1.5V
Celeron	500MHz-LV	100MHz	0.18 micron	1.35V	1.5V
Celeron	500MHz	100MHz	0.18 micron	1.6V	1.5V
Celeron	550MHz	100MHz	0.18 micron	1.6V	1.5V
Celeron	600MHz	100MHz	0.18 micron	1.6V	1.5V
Celeron	650MHz	100MHz	0.18 micron	1.6V	1.5V
Celeron	700MHz	100MHz	0.18 micron	1.6V	1.5V
Celeron	750MHz	100MHz	0.18 micron	1.6V	1.5V
Pentium III	400MHz	100MHz	0.18 micron	1.35V	1.5V
Pentium III	450MHz	100MHz	0.18 micron	1.6V	1.5V
Pentium III	500MHz	100MHz	0.18 micron	1.6V	1.5V
Pentium III	500MHz-ULV	100MHz	0.18 micron	1.1/0.975V [1]	1.5V
Pentium III	600MHz-LV	100MHz	0.18 micron	1.35/1.1V [1]	1.5V
Pentium III	600MHz	100MHz	0.18 micron	1.6/1.35V [1]	1.5V
Pentium III	650MHz	100MHz	0.18 micron	1.6/1.35V [1]	1.5V
Pentium III	700MHz	100MHz	0.18 micron	1.6/1.35V [1]	1.5V
Pentium III	700MHz-LV	100MHz	0.18 micron	1.35/1.1V [1]	1.5V
Pentium III	750MHz	100MHz	0.18 micron	1.6/1.35V [1]	1.5V
Pentium III	800MHz	100MHz	0.18 micron	1.6/1.35V [1]	1.5V
Pentium III	850MHz	100MHz	0.18 micron	1.6/1.35V [1]	1.5V
Pentium III	900MHz	100MHz	0.18 micron	1.7/1.35V [1]	1.5V
Pentium III	1GHz	100MHz	0.18 micron	1.7/1.35V [1]	1.5V
LV = Low Voltage
ULV = Ultra Low Voltage

^[1] Uses Intel SpeedStep technology, optionally switching to lower speed and voltage to conserve battery life

Mobile Pentium Processor Steppings

As with Intel's desktop processor, the chips of the mobile processor line undergo continual development and are modified in the form of steppings that incorporate corrections and refinements into the hardware-manufacturing process.

Note

The Mobile Pentium, Mobile Pentium MMX, and Mobile Pentium II processors are no longer being produced, but you might still encounter them in the field.

Tables 4.4 and 4.5 list various versions and steppings for the Mobile Pentium and Mobile Pentium MMX processors.

Table 4.4. Mobile Pentium Processor Versions and Steppings

Type	Family	Model	Stepping	Mfg. Stepping	Core/Bus	Spec. Number	Comments
	5	2	1	B1	75/50	Q0601	TCP
	5	2	2	B3	75/50	Q0606	TCP
	5	2	2	B3	75/50	SX951	TCP
0/2	5	2	4	B5	75/50	Q0704	TCP
	5	2	4	B5	75/50	SX975	TCP
	5	2	5	C2	75/50	Q0725	TCP
	5	2	5	C2	75/50	SK079	TCP
	5	2	5	mA1	75/50	Q0686	VRT, TCP
	5	2	5	mA1	75/50	Q0689	VRT
	5	2	5	mA1	90/60	Q0694	VRT, TCP
	5	2	5	mA1	90/60	Q0695	VRT
	5	2	5	mA1	75/50	SK089	VRT, TCP
	5	2	5	mA1	75/50	SK091	VRT
	5	2	5	mA1	90/60	SK090	VRT, TCP
	5	2	5	mA1	90/60	SK092	VRT
	5	2	B	mcB1	100/66	Q0884	VRT, TCP
	5	2	B	mcB1	120/60	Q0779	VRT, TCP
	5	2	B	mcB1	120/60	Q0808
	5	2	B	mcB1	100/66	SY029	VRT, TCP
	5	2	B	mcB1	120/60	SK113	VRT, TCP
	5	2	B	mcB1	120/60	SK118	VRT, TCP
	5	2	B	mcB1	120/60	SX999
	5	7		mA4	75/50	Q0848	VRT, TCP
	5	7		mA4	75/50	Q0851	VRT
	5	7		mA4	90/60	Q0849	VRT, TCP
	5	7		mA4	90/60	Q0852	VRT
	5	7		mA4	100/66	Q0850	VRT, TCP
	5	7		mA4	100/66	Q0853	VRT
	5	7		mA4	75/50	SK119	VRT, TCP
	5	7		mA4	75/50	SK122	VRT
	5	7		mA4	90/60	SK120	VRT, TCP
	5	7		mA4	90/60	SK123	VRT
	5	7		mA4	100/66	SK121	VRT, TCP
	5	7		mA4	100/66	SK124	VRT
	5	2	C	mcC0	100/66	Q0887	VRT, TCP
	5	2	C	mcC0	120/60	Q0879	VRT, TCP
	5	2	C	mcC0	120/60	Q0880	3.1V
	5	2	C	mcC0	133/66	Q0881	VRT, TCP
	5	2	C	mcC0	133/66	Q0882	3.1V
	5	2	C	mcC0	150/60	Q024	VRT, TCP
	5	2	C	mcC0	150/60	Q0906	TCP, 3.1V
	5	2	C	mcC0	150/60	Q040	VRT
	5	2	C	mcC0	75/50	SY056	VRT/TCP
	5	2	C	mcC0	100/66	SY020	VRT/TCP
	5	2	C	mcC0	100/66	SY046	3.1V
	5	2	C	mcC0	120/60	SY021	VRT, TCP
	5	2	C	mcC0	120/60	SY027	3.1V
	5	2	C	mcC0	120/60	SY030
	5	2	C	mcC0	133/66	SY019	VRT, TCP
	5	2	C	mcC0	133/66	SY028	3.1V
	5	2	C	mcC0	150/60	SY061	VRT, TCP
	5	2	C	mcC0	150/60	SY043	TCP, 3.1V
	5	2	C	mcC0	150/60	SY058	VRT
	5	2	6	E0	75/50	Q0846	TCP
	5	2	6	E0	75/50	SY009	TCP

Table 4.5. Mobile Pentium MMX Processor Versions and Steppings

Type	Family	Model	Stepping	Mfg. Stepping	Core/Bus	Spec. Number	Comments
	5	4	4	mxA3	150/60	Q016	ES, TCP, 2.285V
	5	4	4	mxA3	150/60	Q061	ES, PPGA, 2.285V
	5	4	4	mxA3	166/66	Q017	ES, TCP, 2.285V
	5	4	4	mxA3	166/66	Q062	ES, PPGA, 2.285V
	5	4	4	mxA3	150/60	SL22G	TCP, 2.285V
	5	4	4	mxA3	150/60	SL246	PPGA, 2.285V
	5	4	4	mxA3	166/66	SL22F	TCP, 2.285V
	5	4	4	mxA3	166/66	SL23Z	PPGA, 2.285V
	5	4	3	mxB1	120/60	Q230	ES, TCP, 2.2V
	5	4	3	mxB1	133/66	Q130	ES, TCP, 2.285V
	5	4	3	mxB1	133/66	Q129	ES, PPGA, 2.285V
	5	4	3	mxB1	150/60	Q116	ES, TCP, 2.285V
	5	4	3	mxB1	150/60	Q128	ES, PPGA, 2.285V
	5	4	3	mxB1	166/66	Q115	ES, TCP, 2.285V
	5	4	3	mxB1	166/66	Q127	ES, PPGA, 2.285V
	5	4	3	mxB1	133/66	SL27D	TCP, 2.285V
	5	4	3	mxB1	133/66	SL27C	PPGA, 2.285V
	5	4	3	mxB1	150/60	SL26U	TCP, 2.285V
	5	4	3	mxB1	150/60	SL27B	PPGA, 2.285V
	5	4	3	mxB1	166/66	SL26T	TCP, 2.285V
	5	4	3	mxB1	166/66	SL27A	PPGA, 2.285V
	5	8	1	myA0	166/66	Q255	TCP, 1.8V
	5	8	1	myA0	200/66	Q146	TCP, 1.8V
	5	8	1	myA0	233/66	Q147	TCP, 1.8V
	5	8	1	myA0	200/66	SL28P	TCP, 1.8V
	5	8	1	myA0	233/66	SL28Q	TCP, 1.8V
	5	8	1	myA0	266/66	Q250	TCP, 2.0V
ES = Engineering Sample. These chips were not sold through normal channels, but were designed for development and testing purposes.
STP = The cB1 stepping is logically equivalent to the C2 step, but on a different manufacturing process. The mcB1 step is logically equivalent to the cB1 step (except that it does not support DP, APIC, or FRC). The mcB1, mA1, mA4, and mcC0 steps also use Intel's VRT (voltage-reduction technology) and are available in the TCP or SPGA package, primarily to support mobile applications. The mxA3 is logically equivalent to the xA3 stepping (except that it does not support DP or APIC).
TCP = Tape Carrier Package
PPGA = Plastic PGA
VRT = Voltage-Reduction Technology
2.285V = This is a Mobile Pentium processor with MMX technology with a core operating voltage of 2.285V “2.665V.
1.8V = This is a Mobile Pentium processor with MMX technology with a core operating voltage of 1.665V “1.935V and an I/O operating voltage of 2.375V “2.625V.
2.2V = This is a Mobile Pentium processor with MMX technology with a core operating voltage of 2.10V “2.34V.
2.0V = This is a Mobile Pentium processor with MMX technology with a core operating voltage of 1.850V “2.150V and an I/O operating voltage of 2.375V “2.625V.

Table 4.6 lists the steppings for Mobile Pentium II processors in the mobile module, mobile minicartridge, and other forms.

Table 4.6. Mobile Pentium II Processor Steppings

Family	Model	Core Stepping	L2 Cache Size (KB)	L2 Cache Speed	S-Spec	Core/Bus	Notes
6	5	mdA0	512	1/2 core	SL2KH	233/66	MC, 1.7V
6	5	mdA0	512	1/2 core	SL2KJ	266/66	MC, 1.7V
6	5	mmdA0	512	1/2 core	PMD233	233/66	MMO, 1.7V
6	5	mmdA0	512	1/2 core	PMD266	266/66	MMO, 1.7V
6	5	mdB0	512	1/2 core	SL2RS	300/66	MC, 1.6V1
6	5	mdB0	512	1/2 core	SL2RR	266/66	MC, 1.6V1
6	5	mdB0	512	1/2 core	SL2RQ	233/66	MC, 1.6V1
6	5	mdxA0	256	core	SL32M	266/66	MC, 1.6V1
6	5	mdxA0	256	core	SL32N	300/66	MC, 1.6V1
6	5	mdxA0	256	core	SL32P	333/66	MC, 1.6V1
6	5	mdxA0	256	core	SL36Z	366/66	MC, 1.6V1
6	5	mdbA0	256	core	SL32Q	266/66	BG, 1.6V2
6	5	mdbA0	256	core	SL32R	300/66	BG, 1.6V2
6	5	mdbA0	256	core	SL32S	333/66	BG, 1.6V2
6	5	mdbA0	256	core	SL3AG	366/66	BG, 1.6V2
6	5	mdbA0	256	core	SL3DR	266/66	BG, 1.5V
6	5	mdbA0	256	core	SL3HH	266/66	PG, 1.6V2
6	5	mdbA0	256	core	SL3HJ	300/66	PG, 1.6V2
6	5	mdbA0	256	core	SL3HK	333/66	PG, 1.6V2
6	5	mdbA0	256	core	SL3HL	366/66	PG, 1.6V2
1.7V = Core processor voltage is 1.7V for these Mobile Pentium processors.
1.6V1 = Core processor voltage is 1.6V +/ “ 120mV for these processors.
1.6V2 = Core processor voltage is 1.6V +/ “ 135mV for these processors.
1.5V = Core processor voltage is 1.6V +/ “ 135mV for this processor.
MC = Mobile Pentium II processor mounted in a minicartridge.
MMO = Mobile Pentium II processor mounted in a mobile module, including the 440BX North Bridge.
BG = Mobile Pentium II processor in BGA packaging for low-profile surface mounting.
PG = Mobile Pentium II processor in a micro-PGA1 package.

Mobile Pentium III Processors and Steppings

The Mobile Pentium III has also been available in a number of models and steppings, which can be distinguished by their specification numbers and other details (see Table 4.7).

Table 4.7. Mobile Pentium III Processor Models and Revisions

Speed (MHz)	Speed Step (MHz)	S-Spec	Stepping	CPUID	L2 Cache	Power (W)	Speed Step (W)	Voltage	Form Factor
400	”	SL3DU	BA2	0681	256K	10.1	”	1.35V	BGA2
400	”	SL43K	BB0	0683	256K	10.1	”	1.35V	BGA2
400	”	SL4JN	BC0	0686	256K	10.1	”	1.35V	BGA2
450	”	SL3KX	PA2	0681	256K	15.5	”	1.6V	BGA2
450	”	SL43L	BB0	0683	256K	15.5	”	1.6V	BGA2
450	”	SL4JA	BC0	0686	256K	15.5	”	1.6V	BGA2
450	”	SL4JQ	PC0	0686	256K	15.5	”	1.6V	PGA2
450	”	SL3RF	PA2	0681	256K	15.5	”	1.6V	PGA2
450	”	SL3LG	PA2	0681	256K	15.5	”	1.6V	PGA2
450	”	SL43N	PB0	0683	256K	15.5	”	1.6V	PGA2
450	”	PML45 00200 1AA	MA2	0681	256K	14.1	”	1.6/1.35V	MMC-2
450	”	PML45 00210 1AB	MB0	0683	256K	14.1	”	1.6/1.35V	MMC-2
450	”	PML45 00220 1AC	MC0	0686	256K	14.1	”	1.6V	MMC-2
500	”	SL3DT	BA2	0681	256K	16.8	”	1.6V	BGA2
500	”	SL43M	BB0	0683	256K	16.8	”	1.6V	BGA2
500	”	SL3PK	BA2	0681	256K	10.1	”	1.35V	BGA2
500	”	SL43Z	BB0	0683	256K	10.1	”	1.35V	BGA2
500	”	SL4JB	BC0	0686	256K	15.5	”	1.6V	BGA2
500	”	SL4JP	BC0	0686	256K	10.1	”	1.35V	BGA2
500	300	SL4ZH	BC0	0686	256K	8.1	4.5	1.1/0.975V	BGA2
500	”	SL4JR	PC0	0686	256K	16.8	”	1.6V	PGA2
500	”	SL3RG	PA2	0681	256K	16.8	”	1.6V	PGA2
500	”	SL3DW	PA2	0681	256K	16.8	”	1.6V	PGA2
500	”	SL43P	PB0	0683	256K	16.8	”	1.6V	PGA2
500	”	PML50 00200 1AA	MA2	0681	256K	15.0	”	1.6V	MMC-2
500	”	PML50 00210 1AB	MB0	0683	256K	15.0	”	1.6V	MMC-2
500	”	PML50 00220 1AC	MC0	0686	256K	15.0	”	1.6V	MMC-2
600	500	SL3PM	PA2	0681	256K	20.0	12.2	1.6/1.35V	BGA2
600	500	SL43Y	BA2	0683	256K	20.0	12.2	1.6/1.35V	BGA2
600	500	SL4GH	BB0	0683	256K	14.4	8.1	1.35/1.1V	BGA2
600	500	SL4JH	BC0	0686	256K	15.8	8.7	1.6/1.35V	BGA2
600	500	SL4JM	BC0	0686	256K	14.4	8.1	1.35/1.1V	BGA2
600	500	SL4JX	PC0	0686	256K	20.0	12.2	1.6/1.35V	PGA2
600	500	SL3TP	PA2	0681	256K	20.0	12.2	1.6/1.35V	PGA2
600	500	SL3PM	PA2	0681	256K	20.0	12.2	1.6/1.35V	PGA2
600	500	SL443	PB0	0683	256K	20.0	12.2	1.6/1.35V	PGA2
600	500	PML60 00200 1AA	MA2	0681	256K	16.6	12.2	1.6/1.35V	MMC-2
600	500	PML60 00210 1AB	MB0	0683	256K	16.6	12.2	1.6/1.35V	MMC-2
600	500	PMM60 00220 1AC	MC0	0686	256K	16.6	12.2	1.6/1.35V	MMC-2
650	500	SL3PG	BA2	0681	256K	21.5	12.2	1.6/1.35V	BGA2
650	500	SL43X	BB0	0683	256K	21.5	12.2	1.6/1.35V	BGA2
650	500	SL4JJ	BC0	0686	256K	21.5	12.2	1.6/1.35V	BGA2
650	500	SL4JY	PC0	0686	256K	21.5	12.2	1.6/1.35V	PGA2
650	500	SL3TQ	PA2	0681	256K	21.5	12.2	1.6/1.35V	PGA2
650	500	SL3PL	PA2	0681	256K	21.5	12.2	1.6/1.35V	PGA2
650	500	SL442	PB0	0683	256K	21.5	12.2	1.6/1.35V	PGA2
650	500	PML65 00200 1AA	MA2	0681	256K	17.8	12.2	1.6/1.35V	MMC-2
650	500	PMM65 00210 1AB	MB0	0683	256K	17.8	12.2	1.6/1.35V	MMC-2
650	500	PMM65 00210 1AC	MC0	0686	256K	17.8	12.2	1.6/1.35V	MMC-2
700	500	SL56R	BC0	0686	256K	16.1	8.1	1.35/1.1V	BGA2
700	550	SL3Z7	BB0	0683	256K	22.0	13.2	1.6/1.35V	BGA2
700	550	SL4JK	BC0	0686	256K	22.0	13.2	1.6/1.35V	BGA2
700	550	SL4JZ	PC0	0683	256K	22.0	13.2	1.6/1.35V	PGA2
700	550	SL4DL	PB0	0683	256K	22.0	13.4	1.6/1.35V	PGA2
700	550	SL3Z8	PB0	0683	256K	22.0	13.4	1.6/1.35V	PGA2
700	550	PMM70 00210 1AA	MB0	0683	256K	19.1	13.4	1.6/1.35V	MMC-2
700	550	PMM70 00220 1AB	MC0	0686	256K	19.1	13.4	1.6/1.35V	MMC-2
750	600	SL4JL	BC0	0686	256K	24.6	14.4	1.6/1.35V	BGA2
750	600	SL54A	BD0	068A	256K	24.6	14.4	1.6/1.35V	BGA2
750	600	SL4K2	PC0	0686	256K	24.6	14.4	1.6/1.35V	PGA2
750	600	SL53P	PD0	068A	256K	24.6	14.4	1.6/1.35V	PGA2
750	600	SL4DM	MB0	0683	256K	24.6	14.4	1.6/1.35V	PGA2
750	600	SL44T	MB0	0683	256K	24.6	14.4	1.6/1.35V	PGA2
750	600	SL4AS	MB0	0683	256K	24.6	14.4	1.6/1.35V	BGA2
750	600	PMM75 00210 1AB	MB0	0683	256K	24.6	14.4	1.6/1.35V	MMC-2
750	600	PMM75 00210 1AA	MB0	0683	256K	24.6	14.4	1.6/1.35V	MMC-2
750	600	PMM75 00220 1AB	MC0	0686	256K	24.6	14.4	1.6/1.35V	MMC-2
800	650	SL4AK	BC0	0686	256K	25.9	15.1	1.6/1.35V	BGA2
800	650	SL548	BD0	068A	256K	25.9	15.1	1.6/1.35V	BGA2
800	650	SL4GT	PC0	0686	256K	25.9	15.1	1.6/1.35V	PGA2
800	650	SL53M	PD0	068A	256K	25.9	15.1	1.6/1.35V	PGA2
800	650	PMM80 00220 1AA	MC0	0686	256K	24.6	14.4	1.6/1.35V	MMC-2
850	700	SL4AG	BC0	0686	256K	27.5	16.1	1.6/1.35V	BGA2
850	700	SL547	BD0	068A	256K	27.5	16.1	1.6/1.35V	BGA2
850	700	SL4AH	PC0	0686	256K	27.5	16.1	1.6/1.35V	PGA2
850	700	SL53L	PD0	068A	256K	27.5	16.1	1.6/1.35V	PGA2
850	700	PMM85 00220 1AA	MC0	0686	256K	24.6	14.4	1.6/1.35V	MMC-2
900	700	SL59H	BC0	0686	256K	30.7	16.1	1.6/1.35V	BGA2
900	700	SL59J	PC0	0686	256K	30.7	16.1	1.7/1.35V	BGA2
1000	700	SL54F	BD0	068A	256K	34.0	16.1	1.7/1.35V	BGA2
1000	700	SL53S	PD0	068A	256K	34.0	16.1	1.7/1.35V	PGA2
PGA2 = 495-pin micro-PGA2 (pin grid array 2) form factor
BGA2 = 495-pin BGA2 (Ball Grid Array 2) form factor
MMC-2 = Mobile Module Connector-2 form factor
SpeedStep = Technology that optionally runs the processor at a lower speed and voltage in a battery-optimized mode

Mobile Pentium 4 and Pentium 4-M Processors

The mobile Pentium 4-M was introduced in March 2002 and represents a new generation in processors. If this one had a number instead of a name , it might be called the 786 because it represents a generation beyond the previous sixth -generation or 686-class processors. The Mobile Pentium 4-M utilizes a 478-pin, Micro Flip-Chip Pin Grid Array (micro-FCPGA) package and plugs into a micro-479 PGA mobile (mPGA479M) socket.

Figure 4.15. Mobile Pentium 4-M micro-FCPGA processor.

The main technical details for the Pentium 4-M include these:

• Speeds that range from 1.3GHz to 3.2GHz and beyond

• 55 million transistors , 0.13-micron process, 131mm ² die (Northwood, see Figure 4.16)

  Figure 4.16. Pentium 4 Northwood die (0.13-micron process, 55 million transistors, 131mm ² ). ( Photograph used by permission of Intel Corporation.)

  

• Software compatible with previous Intel 32-bit processors

• Processor (front-side) bus that runs at 400MHz

• Arithmetic logic units (ALUs) that run at twice the processor core frequency

• Hyperpipelined (20-stage) technology

• Very deep out-of-order instruction execution

• Enhanced branch prediction

• 20KB L1 cache (12KB L1 execution trace cache plus 8KB L1 data cache)

• 512KB of on-die, full-core speed 128-bit L2 cache with eight-way associativity

• L2 cache that can handle up to 4GB RAM and that supports ECC

• SSE2 ”144 new SSE2 instructions for graphics and sound processing

• Enhanced floating-point unit

• Multiple low-power states

Intel has abandoned Roman numerals for a standard Arabic numeral 4 designation. Internally, the Pentium 4-M introduces a new architecture that Intel calls NetBurst microarchitecture, which is a marketing term, not a technical term . Intel uses NetBurst to describe hyperpipelined technology, a rapid-execution engine, a high-speed (400MHz) system bus, and an execution trace cache. The hyperpipelined technology doubles the instruction pipeline depth as compared to the Pentium III, meaning that more and smaller steps are required to execute instructions. This might seem less efficient, but it enables much higher clock speeds to be more easily attained. The rapid-execution engine enables the two integer arithmetic logic units (ALUs) to run at twice the processor core frequency, which means that instructions can execute in half a clock cycle. The 400MHz system bus is a quad-pumped bus running off a 100MHz system clock transferring data four times per clock cycle. The execution trace cache is a high-performance Level 1 cache that stores approximately 12KB decoded micro-operations. This removes the instruction decoder from the main execution pipeline, increasing performance.

Of these, the high-speed processor bus is most notable. Technically, the processor bus is a 100MHz quad-pumped bus that transfers four times per cycle (4x), for a 400MHz effective rate. Because the bus is 64 bits (8 bytes) wide, this results in a throughput rate of 3200MBps.

In the new 20-stage pipelined internal architecture, individual instructions are broken down into many more substages, making this almost like a RISC processor. Unfortunately, this can add to the number of cycles taken to execute instructions if they are not optimized for this processor. Early benchmarks running existing software showed that existing Pentium III or AMD Athlon processors could easily keep pace with or even exceed the Pentium 4 in specific tasks ; however, this is changing now that applications are being recompiled to work smoothly with the Pentium 4's deep pipelined architecture.

When used in conjunction with the requisite Intel SpeedStep technology driver, the Mobile Pentium 4-M supports Enhanced SpeedStep technology, which enables real-time dynamic switching of the voltage and frequency between two performance modes. This allows switching of the bus ratios, core operating voltage, and core processor speeds without resetting the system. The Mobile Pentium 4 Processor-M is available at the speeds listed in Table 4.8.

Table 4.8. Mobile Pentium 4-M Processor Speed and Power Consumption

Maximum Performance			Battery-Optimized Mode
Processor Frequency	Voltage	Power Consumption	Optimized Speed	Voltage	Power Consumption
2.60GHz	1.3V	35W	1.20GHz	1.2V	20.8W
2.50GHz	1.3V	35W	1.20GHz	1.2V	20.8W
2.40GHz	1.3V	35W	1.20GHz	1.2V	20.8W
2.20GHz	1.3V	35W	1.20GHz	1.2V	20.8W
2.0GHz	1.3V	32W	1.20GHz	1.2V	20.8W
1.90GHz	1.3V	32W	1.20GHz	1.2V	20.8W
1.80GHz	1.3V	30W	1.20GHz	1.2V	20.8W
1.70GHz	1.3V	24.5W	1.20GHz	1.2V	20.8W
1.60GHz	1.3V	30W	1.20GHz	1.2V	20.8W
1.50GHz	1.3V	26.9W	1.20GHz	1.2V	20.8W
1.40GHz	1.3V	25.8W	1.20GHz	1.2V	20.8W

In June 2003, Intel introduced the Mobile Pentium 4, which is different from the Mobile Pentium 4-M that preceded it. The main differences between the Mobile Pentium 4 and the Mobile Pentium 4-M are shown Table 4.9.

Table 4.9. Mobile Pentium 4-M and Mobile Pentium 4 Processor Differences

Feature	Mobile Pentium 4-M	Mobile Pentium 4
Bus speed	400MHz	533MHz
CPU speed	Up to 2.6GHz	Up to 3.2GHz
SpeedStep	Yes	Yes
Hyperthreading	No	Optional
Voltage	1.3/1.2V	1.5/1.2V
Power	35W	70W

The Mobile Pentium 4 is based on the desktop Pentium 4 processor but is designed to run on a marginally lower voltage and with the addition of enhanced SpeedStep. This processor is designed for high- powered laptops that are used more as transportable desktop systems, in which battery life is not a big concern.

Although this is close to being a desktop chip, it still offers power-management and reduced voltage operation features that make it much more suitable for use in a laptop than the full desktop version of the Pentium 4. Table 4.10 shows the specifications for the Mobile Pentium 4 processors.

Table 4.10. Mobile Pentium 4 Processor Specifications

CPU Max Speed	CPU Min Speed	CPU Bus Speed	S-Spec	Power (Watts)
3.06GHz	1.6GHz	533MHz	SL726	70
2.80GHz	1.6GHz	533MHz	SL725	68.4
2.66GHz	1.6GHz	533MHz	SL724	66.1
2.40GHz	1.6GHz	533MHz	SL723	59.8

Pentium M

The Pentium M is the first Intel processor designed exclusively for mobile use. The Pentium M processor (code-named Banias) was officially introduced in March 2003 along with the 855 chipset family and the PRO/Wireless 2100 mini-PCI network adapter, which fall under what Intel calls the Centrino brand name when combined in a single system. Figure 4.17 shows all of the components that make up the Centrino brand.

Figure 4.17. Pentium M and Centrino Components. ( Photograph used by permission of Intel Corporation.)

The core of Centrino is the Pentium M processor, which, in many ways, seems to be a combination of the best features of both the Pentium III and Pentium 4 processor cores, with a Pentium 4 bus and other major enhancements and features added. The major enhancements come in the form of several new internal architectural features, including the following:

• Micro-operation fusion. Micro-operations derived from the same instruction or macro-operation are fused together, resulting in greater throughput using less power.

• ESP (Extended Stack Pointer) Folding. High-level code often requires intensive stack manipulation. ESP Folding eliminates ESP-manipulation micro-operations in stack- related operations, enabling faster execution.

• 32KB L1 cache.

• Massive 1MB on-die L2 cache (twice as large as the Pentium III/4 cache).

• Wider queues and translation lookaside buffers (TLBs).

• 128 entries in TLBs.

• Improved branch prediction.

The Pentium M offers performance equal to or even greater than that of the Pentium 4, while consuming much less power and generating much less heat. Other features include these:

• 77 million transistors, 0.13-micron process, and 84mm ² die (Northwood, see Figure 4.16)

• Software compatible with previous Intel 32-bit processors

• Processor (front-side) bus that runs at 400MHz

• SSE2 ”144 new SSE2 instructions for graphics and sound processing

• Enhanced floating-point unit

• Multiple low-power states, including the capability to power off portions of the processor and cache that aren't being used

The Pentium M processor with the Banias core contains 77 million transistors and is manufactured using 0.13-micron process technology. It is available in speeds ranging from 1.3GHz to 1.7GHz. A version with a new Dothan core using 0.09-micron technology is available at 1.8GHz. The Pentium M includes Enhanced SpeedStep technology with multiple voltage and frequency operating points to conserve power and Streaming SIMD Extensions 2 (SSE2), which is the latest version of MMX technology also included with the Pentium 4. The Pentium M die is shown in Figure 4.18.

Figure 4.18. Pentium M Die, 0.13 micron Banias Core. ( Photograph used by permission of Intel Corporation.)

Notice that the Pentium M die is dominated by the huge 1MB L2 cache, which takes up nearly half the space on the chip. The large cache is responsible for the high transistor count because, in general, it takes about six transistors for each bit of cache memory.

Table 4.11 lists the various models of the Pentium M processors that Intel has released.

Table 4.11. Pentium M Processor Models and Revisions

CPU Max Speed	CPU Min Speed	Bus Speed	S-Spec	Stepping	CPUID	L2	Power (Watts)
1.30GHz	600MHz	400MHz	SL6N4	PB1	0695	1MB	22.0
1.40GHz	600MHz	400MHz	SL6F8	PB1	0695	1MB	22.0
1.50GHz	600MHz	400MHz	SL6F9	PB1	0695	1MB	24.5
1.60GHz	600MHz	400MHz	SL6FA	PB1	0695	1MB	24.5
1.70GHz	600MHz	400MHz	SL6N5	PB1	0695	1MB	24.5

A Centrino by Any Other Name

The name Pentium M refers only to the actual processor, while the name Centrino refers to the combination of the Pentium M processor, 855 chipset, and the Intel PRO/2100 mini-PCI wireless network card. Laptops can be assembled using the Pentium M processor and 855 chipset, and with a non-Intel wireless card; however, according to Intel's marketing rules, the Centrino brand name or sticker can't be applied in such a case. Because there is no direct connection between the wireless networking card and the processor or chipset, the Centrino brand name is merely Intel's method of forcing its way into the wireless networking business and is really unrelated to the Pentium M processor itself. Note that many of the third-party wireless network cards (such as those from Atheros or Agere) offer equal or better performance and power consumption as Intel's own card. In other words, if you want the ultimate in laptop performance and battery life, look for the Pentium M processor with or without the entire Centrino branded package.

Because of the high-speed bus, large internal cache, and shorter internal pipeline (similar to the Pentium III), the Pentium M performs much faster than its raw clock speed indicates. Intel performance tests on the Mobile Pentium 4, Mobile Pentium 4-M, and Pentium M show that the Pentium M is significantly faster than you might think, as seen in Table 4.12.

Table 4.12. Comparison of MobilMark 2002 Scores and Relative Battery Life Among Mobile Pentium 4, Mobile Pentium 4-M, and Pentium M Processors

CPU Type	CPU Speed	Bus Speed	MobilMark 2002 Score	Relative Battery Life
Mobile Pentium 4	3.06GHz	533MHz	216	2.43
Mobile Pentium 4	2.40GHz	533MHz	197	2.62
Pentium M	1.70GHz	400MHz	195	4.66
Mobile Pentium 4-M	2.60GHz	400MHz	179	2.80
Mobile Pentium 4-M	2.00GHz	400MHz	163	2.80
Mobile Pentium 4-M	1.40GHz	400MHz	142	2.87

From this table, you can see that the 1.7GHz Pentium M is significantly faster than the 2.6GHz Mobile Pentium 4-M and is just about tied with the 2.4GHz Mobile Pentium 4, while offering nearly double the battery life! One thing not shown on this table is how cool the Pentium M actually runs. Most of the Pentium 4 laptops I've used get uncomfortably hot if you actually have them sitting on your lap. The Pentium M, on the other hand, uses much less power and, as a result, generates much less heat so that the system exterior barely gets warm to the touch. A fringe benefit of this is that Pentium M systems are inherently quiet because they don't need a roaring fan to keep them cool. If you want a fast, cool, and quiet laptop, I highly recommend systems using the Pentium M processor.

Mobile Celeron Processors

The mobile Celeron processor is available in several versions, including those based on Pentium II, Pentium III, and Pentium 4 processors.

The 1.4GHz and faster versions of the mobile Celeron processor are based on the Mobile Pentium 4 design. They are essentially identical to Mobile Pentium 4 processors, except that they include only 256KB of L2 cache. Like the Mobile Pentium 4, these chips utilize a 478-pin, micro-FCPGA package and plug into a micro-479 PGA mobile (mPGA479M) socket.

The Pentium 4 “based mobile Celeron is designed for low-cost, high-value portable systems. Features of the processor are the same as the Pentium 4, with the exception of cache size and, in some cases, bus speed.

Mobile Celeron processors based on the Pentium 4 design are available at the following core speeds:

• 2.2GHz

• 2.0GHz

• 1.8GHz

• 1.7GHz

• 1.6GHz

• 1.5GHz

• 1.4GHz

All of these processors use the 400MHz Pentium 4 bus.

Mobile Celeron processors from 650MHz through 1.33GHz are built on a 0.13-micron process, available in both micro-FCBGA and micro-FCPGA packages, and use the same core as the Mobile Pentium III. As with the Pentium III, these processors include Streaming SIMD instructions, an Advanced Transfer Cache architecture, and a processor system bus speed of 100 or 133MHz. These features are offered in micro-FCPGA and micro-FCBGA packages. The Low Voltage and Ultra Low Voltage mobile processors will be available only in the micro-FCBGA package. The 256KB integrated L2 cache based on the Advanced Transfer Cache architecture runs at full core speed.

Mobile Celeron processors based on the 0.13-micron Pentium III design with 256KB of L2 cache are available at the following speeds:

• 1.33GHz

• 1.26GHz

• 1.20GHz

• 1.13GHz

• 1.06GHz

• 1.00GHz

• 733MHz

• 700MHz

• 667MHz

• 650MHz

Mobile Celeron processors from 400MHz through 900MHz are built on a 0.18-micron process, available in micro-BGA2 and micro-PGA2 packages, and use the same core as the Pentium III, but with only 128KB of L2 cache.

Mobile Celeron processor based on the 0.18-micron Pentium III design are available in the following core speeds:

• 900MHz

• 850MHz

• 800MHz

• 750MHz

• 700MHz

• 650MHz

• 600MHz

• 550MHz

• 500MHz

• 450MHz

• 400MHz

All of these processors use a 100MHz Pentium III bus.

Mobile Celeron processors from 733MHz to 933MHz use a 0.18-micron process and micro-FCBGA or micro-FCPGA packages. These processors support a bus speed of 133MHz and a 128KB L2 cache, and are offered in micro-FCBGA and micro-FCPGA form factors.

Mobile Celeron processor based on the 0.18-micron Pentium III design are available in the following core speeds:

• 933MHz

• 866MHz

• 800AMHz

• 733MHz

The "A" designation indicates a 133MHz bus, to differentiate the same-speed model with a slower 100MHz bus.

Mobile Celeron Processors and Steppings

Intel's entry into low-cost processors, the Celeron, is also available in a mobile form, featuring reduced voltages, PGA or BGA (ball grid array) packaging, and the MMC-1 and MMC-2 minicartridge modules also used by the Mobile Pentium III.

Table 4.13 lists the steppings for Mobile Celeron processors in BGA and PGA packaging.

Table 4.13. Mobile Celeron Processor Steppings

Family	Model	Core Stepping	L2 Cache (KB)	S-Spec	Speed Core/Bus	Notes
6	6	mcbA0	128	SL23X	266/66	B, 1
6	6	mcbA0	128	SL23Y	266/66	B, 1
6	6	mcbA0	128	SL3AH	300/66	B, 1
6	6	mcbA0	128	SL3C8	333/66	B, 1
6	6	mcbA0	128	SL3C7	366/66	B, 1
6	6	mcbA0	128	SL3DQ	266/66	B, 2
6	6	mcbA0	128	SL3GQ	400/66	B, 1
6	6	mcbA0	128	SL3KA	433/66	P, 1
6	6	mcbA0	128	SL3KC	466/66	P, 1
6	6	mcpA0	128	SL3HM	266/66	P, 1
6	6	mcpA0	128	SL3HN	300/66	P, 1
6	6	mcpA0	128	SL3HP	333/66	P, 1
6	6	mcpA0	128	SL3HQ	366/66	P, 1
6	6	mcpA0	128	SL3GR	400/66	P, 1
6	6	mcpA0	128	SL3KB	433/66	P, 1
6	6	mcpA0	128	SL3KD	466/66	P, 1
B = BGA package
P = PGA package
1 = Runs at a core voltage of 1.6V
2 = Runs at a core voltage of 1.5V

Table 4.14 lists the steppings for Mobile Celeron processors in MMC-1 and MMC-2 minicartridge packaging. All Mobile Celerons in MMC-1 and MMC-2 packaging also feature a 128KB L1 cache.

Table 4.14. Mobile Celeron Minicartridge Steppings

Speed Core/Bus	Product Stepping	CPUID	PTC	Package
266/66	cmmA0	066A	PMH26601001AA	MMC-1
266/66	cmmA0	066A	PMH26601001AA	MMC-1
300/66	cmmA0	066A	PMH30001001AA	MMC-1
333/66	cmmA0	066A	PMH33301001AA	MMC-1
366/66	cmmA0	066A	PMH36601001AA	MMC-1
400/66	cmmA0	066A	PMH40001001AA	MMC-1
433/66	cmmA0	066A	PMH43301001AA	MMC-1
466/66	cmmA0	066A	PMH46601001AA	MMC-1
266/66	cmmA0	066A	PMI26601001AA	MMC-2
300/66	cmmA0	066A	PMI30001001AA	MMC-2
333/66	cmmA0	066A	PMI33301001AA	MMC-2
366/66	cmmA0	066A	PMI36601001AA	MMC-2
400/66	cmmA0	066A	PMI40001001AA	MMC-2
433/66	cmmA0	066A	PMI43301001AA	MMC-2
466/66	cmmA0	066A	PMI46601001AA	MMC-2

The latest Mobile Celeron processors are built on the same 0.18-micron process and the same micro-BGA2 and micro-PGA2 packaging used by the Pentium III processor, and feature a bus speed of 100MHz, which is faster than previous Mobile Celeron CPUs. Table 4.15 lists the steppings for 0.18-micron Mobile Celeron processors in micro-BGA2 or micro-PGA2 packaging.

Table 4.15. Mobile Celeron Processor (0.18 Micron) Steppings

Speed (MHz) Core/Bus	S-Spec	Product Stepping	CPUID	L2 Cache Size	Package
400/100	SL3UL	BA2	0681	128KB	BGA2
400/100	SL43W	BB0	0683	128KB	BGA2
400/100	SL4J8	BC0	0686	128KB	BGA2
450/100	SL3PD	BA2	0681	128KB	BGA2
450/100	SL43T	BB0	0683	128KB	BGA2
450/100	SL4JC	BC0	0686	128KB	BGA2
450/100	SL3PF	PA2	0681	128KB	mPGA2
450/100	SL43U	PB0	0683	128KB	mPGA2
450/100	SL4JS	PC0	0686	128KB	mPGA2
500/100	SL45A	BB0	0683	128KB	BGA2
500/100	SL3PC	BA2	0681	128KB	BGA2
500/100	SL43Q	BB0	0683	128KB	BGA2
500/100	SL4JD	BC0	0686	128KB	BGA2
500/100	SL4J9	BC0	0686	128KB	BGA2
500/100	SL4ZR	BC0	0686	128KB	BGA2
500/100	SL5DR	BD0	068A	128KB	BGA2
500/100	SL3PE	PA2	0681	128KB	mPGA2
500/100	SL43R	PB0	0683	128KB	mPGA2
500/100	SL4JT	PC0	0686	128KB	mPGA2
550/100	SL3ZE	BB0	0683	128KB	BGA2
550/100	SL4JE	BC0	0686	128KB	BGA2
550/100	SL3ZF	PB0	0683	128KB	mPGA2
550/100	SL4JU	PC0	0686	128KB	mPGA2
600/100	SL4AR	BB0	0683	128KB	BGA2
600/100	SL4JF	BC0	0686	128KB	BGA2
600/100	SL5DS	BD0	068A	128KB	BGA2
600/100	SL582	BD0	068A	128KB	BGA2
600/100	SL4AP	PB0	0683	128KB	mPGA2
600/100	SL4JV	PC0	0686	128KB	mPGA2
650/100	SL4AD	BB0	0683	128KB	BGA2
650/100	SL4JG	BC0	0686	128KB	BGA2
650/100	SL4AE	PB0	0683	128KB	mPGA2
650/100	SL4JW	PC0	0686	128KB	mPGA2
700/100	SL4GU	BC0	0686	128KB	BGA2
700/100	SL53V	BD0	068A	128KB	BGA2
700/100	SL4GX	PC0	0686	128KB	mPGA2
700/100	SL53D	PD0	068A	128KB	mPGA2
750/100	SL56P	BC0	0686	128KB	BGA2
750/100	SL53U	BD0	068A	128KB	BGA2
750/100	SL56Q	PC0	0686	128KB	mPGA2
750/100	SL53C	PD0	068A	128KB	mPGA2
800/100	SL57X	BD0	068A	128KB	BGA2
800/100	SL584	PD0	068A	128KB	mPGA2