List of Intel Pentium II microprocessors

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The Pentium II from Intel is a sixth-generation CPU targeted at the consumer market.

Desktop processors

"Klamath" (350 nm)

All models support: MMX
L2 cache is off-die and runs at 50% CPU speed
Part numbers prefixed with a B are for boxed retail CPUs

Model number	sSpec number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Part number(s)	Release price (USD)
Pentium II 233	SL264 (C0) SL28K (C0) SL2HD (C1) SL2QA (C1) SL268 (C0) SL2HF (C1) SL2TK (C0)	233 MHz	512 KB	66 MT/s	3.5×	2.8 V	34.8 W	Slot 1	May 7, 1997	80522PX233512 80522PX233512EC^{[lower-alpha 1]} B80522PX233512	$636
Pentium II 266 [1]^[2]	SL265 (C0) SL28L (C0) SL2HC (C1) SL2QB (C1) SL269 (C0) SL2PV (C0) SL2HE (C1) SL2QD (C1)	267 MHz	512 KB	66 MT/s	4×	2.8 V	38.2 W	Slot 1	May 7, 1997	80522PX266512 80522PX266512EC^{[lower-alpha 1]} B80522PX266512 B80522PX266512E DC80522PX266512	$775
Pentium II 300 [3]^[4]	SL28R (C0) SL2MZ (C0) SL2HA (C1) SL2QC (C1)	300 MHz	512 KB	66 MT/s	4.5×	2.8 V	43 W	Slot 1	May 7, 1997	80522PX300512EC B80522PX300512EC	$1981

1 2 Intel released versions with ECC L2 cache on July 14, 1997 at 233 MHz for $666 (OEM) and at 266 MHz for $805 (OEM)^[5]

"Deschutes" (250 nm)

All models support: MMX
L2 cache is off-die and runs at 50% CPU speed
The Pentium II Overdrive is a Deschutes Pentium II core packaged for Socket 8 operation. It comes with 512 KiB of off-die full-speed L2 cache, which makes it very similar to the Pentium II Xeon.

Model number	sSpec number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Part number(s)	Release price (USD)
Pentium II 266	SL2K9 (dA0) SL2QE (dA0) SL2W7 (dB0) SL33D (dB0)	267 MHz	512 KB	66 MT/s	4×	2.0 V	16.8 W	Slot 1		B80523P266512E
Pentium II 300	SL2VY (dA1) SL35V (dA1) SL2W8 (dB0) SL2YK (dB0)	300 MHz	512 KB	66 MT/s	4.5×	2.0 V	18.6 W	Slot 1		B80523P300512E
Pentium II 333	SL2KA (dA0) SL2QF (dA0) SL2S5 (dA1) SL2QH (dA1) SL2ZP (dA1) SL2TV (dB0) SL2WY (dB0)	333 MHz	512 KB	66 MT/s	5×	2.0 V	20.6 W	Slot 1	January 26, 1998	80523PX333512 also B80523P333512E (No.98350199-0239)	$722
Pentium II Overdrive^[6]^[7]	SL2KE (TdB0) SL3EA (TdB0) SL2K3	333 MHz	512 KB	66 MT/s	5×	3.3 V		Socket 8	August 10, 1998	PODP66X333	$599
Pentium II 350	SL2S6 (dA1) SL2SF (dA1) SL2ZQ (dA1) SL2U3 (dB0) SL2U4 (dB0) SL356 (dB0) SL37F (dB0) SL3FN (dB0) SL38M (dB1) SL3J2 (dB1) SL2WZ (dB0) SL36U (dB1)	350 MHz	512 KB	100 MT/s	3.5×	2.0 V	21.5 W	Slot 1	April 15, 1998	80523PY350512	$621
Pentium II 400	SL2S7 (dA1) SL2SH (dA1) SL2U5 (dB0) SL2U6 (dB0) SL357 (dB0) SL37G (dB0) SL2X2 (dB0) SL2YM (dB0) SL3EE (dB0) SL3F9 (dB0) SL38N (dB1) SL3D5 (dB1) SL38Z (dB1)	400 MHz	512 KB	100 MT/s	4×	2.0 V	24.3 W	Slot 1	April 15, 1998	BX80523U400512E 80523PY400512PE	$824
Pentium II 450	SL2U7 (dB0) SL2WB (dB0) SL358 (dB0) SL37H (dB0)	450 MHz	512 KB	100 MT/s	4.5×	2.0 V	27.1 W	Slot 1	August 24, 1998	BX80523U450512E	$669

Mobile processors

"Tonga" (250 nm)

All models support: MMX
L2 cache is off-die and runs at 50% CPU speed

Model number	sSpec number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Part number(s)	Release price (USD)
Mobile Pentium 233	SL2KH (mdA0) SL2RQ (mdB0) SL2U8 (mDB0)	233 MHz	512 KB	66 MT/s	3.5×	1.7 V	9.0 W	MMC-1 MMC-2	April 2, 1998	PMD23305001AA PMD23305002AB PME23305001AA 80523TX233512	$542
Mobile Pentium 266	SL2KJ (mdA0) SL2RR (mdB0) SL2U9 (mDB0)	267 MHz	512 KB	66 MT/s	4×	1.7 V	10.3 W	MMC-1 MMC-2	April 2, 1998	PMD26605001AA PMD26605002AB PME26605001AA 80523TX266512	$772
Mobile Pentium 300	SL2RS (mdB0) SL2Y7 (mDB0)	300 MHz	512 KB	66 MT/s	4.5×	1.6 V	11.1 W	MMC-1 MMC-2	September 9, 1998	PMD30005002AA PME30005002AA PME30005001AA 80523TX300512	$710

"Dixon" (250 or 180 nm)

All models support: MMX
L2 cache is on-die and runs at 100% CPU speed
Also known as Pentium II "Performance Enhanced"
mqbA1 stepping is actually at 180 nm 27.4 million transistors die size 180 mm²

Model number	sSpec number	Frequency	L2 cache	FSB	Mult.	Voltage	TDP	Socket	Release date	Part number(s)	Release price (USD)
Mobile Pentium II 266PE	SL3HH (mdpA0) SL32Q (mdbA0) SL3DR (mdbA0) SL32M (mdxA0)	267 MHz	256 KB	66 MT/s	4×	1.6 V	10.3 W	μPGA2 BGA2 MMC-2	January 25, 1999	KP80524KX266256 KC80524KX266256 PMG26602002AA	$187
Mobile Pentium II 300PE	SL3HJ (mdpA0) SL32R (mdbA0) SL32N (mdxA0)	300 MHz	256 KB	66 MT/s	4.5×	1.6 V	11.6 W	μPGA2 BGA2 MMC-2	January 25, 1999	KP80524KX300256 KC80524KX300256 PMG30002002AA	$321
Mobile Pentium 333	SL3HK (mdpA0) SL32S (mdbA0) SL32P (mdxA0) SL3KG	333 MHz	256 KB	66 MT/s	5×	1.6 V	11.8 W	μPGA2 BGA2 MMC-2	January 25, 1999	KP80524KX333256 KC80524KX333256 PMF33302001AA	$465
Mobile Pentium II 366	SL3HL (mdpA0) SL3AG (mdbA0) SL36Z (mdxA0)	367 MHz	256 KB	66 MT/s	5.5×	1.6 V	13.1 W	μPGA2 BGA2 MMC-2	January 25, 1999	PMG36602002AA	$696
Mobile Pentium II 400	SL3BW (mqpA1) SL3EM (mqbA1) SL3JW (MdxA0)	400 MHz	256 KB	66 MT/s	6×	1.55 or 1.50^[8] V	13.1 W	μPGA2 BGA2 MMC-2	June 14, 1999	PMG40002002AA KP80524TX400256	$530

References

↑ Pentium II 266(C0)
↑ Pentium II 266
↑ Pentium II 300(C0)
↑ Pentium II 300
↑ "Pentium II Processor Now Including ECC Capability Enables New Level of Processing Power for Entry-Level Servers" (Press release). Intel Corp. July 14, 1997. Retrieved March 12, 2012.
↑ Pentium II Overdrive(dB0)
↑ Pentium II Overdrive
↑ INTEL MOBILE PENTIUM II PROCESSOR IN Micro-PGA AND BGA PACKAGES AT 400 MHz, 366 MHz, 333 MHz, 300PE MHz, AND 266PE MHz Intel 245103-003.pdf data-sheet

External links

Intel processors

Discontinued

BCD oriented (4-bit)	4004 (1971) 4040 (1974)

pre-x86 (8-bit)	8008 (1972) 8080 (1974) 8085 (1977)

Early x86 (16-bit)	8086 (1978) 8088 (1979) 80186 (1982) 80188 (1982) 80286 (1982)

x87 (external FPUs)	8/16-bit databus 8087 (1980) 16-bit databus 80187 80287 80387SX 32-bit databus 80387DX 80487

IA-32 (32-bit)	80386 SX 376 EX 80486 SX DX2 DX4 SL RapidCAD OverDrive A100/A110 Celeron (1998) M D (2004) Pentium Original OverDrive Pro II II OverDrive III 4 M Dual-Core Core Solo Duo

x86-64 (64-bit)	Celeron D Dual-Core Pentium 4 D Extreme Edition Dual-Core Core 2 i7 (some)

Other	CISC iAPX 432 RISC i860 i960 StrongARM XScale

Current

IA-32 (32-bit)	Tolapai Atom CE SoC Quark

x86-64 (64-bit)	Atom CE SoC Celeron Pentium Core i3 i5 i7 M Xeon E7 E5 E3 Phi

EPIC	Itanium

Lists

Atom Celeron Core 2 i3 i5 i7 M Itanium Pentium Pro II III 4 D M Xeon

Related

Chipsets PCHs SCHs ICHs PIIXs GPUs Codenames GMA HD and Iris Graphics

Microarchitectures

P5	800 nm P5 600 nm P54C 350 nm P54CS P55C 250 nm Tillamook

P6 / Pentium M / Enhanced Pentium M	500 nm P6 350 nm P6 Klamath 250 nm Mendocino Dixon Tonga Covington Deschutes Katmai Drake Tanner 180 nm Coppermine Coppermine T Timna Cascades 130 nm Tualatin Banias 90 nm Dothan Stealey Tolapai Canmore 65 nm Yonah Sossaman

NetBurst	180 nm Willamette Foster 130 nm Northwood Gallatin Prestonia 90 nm Tejas and Jayhawk Prescott Smithfield Nocona Irwindale Cranford Potomac Paxville 65 nm Cedar Mill Presler Dempsey Tulsa

Core / Penryn	65 nm Merom-L Merom Conroe-L Allendale Conroe Kentsfield Woodcrest Clovertown Tigerton 45 nm Penryn Penryn-QC Wolfdale Yorkfield Wolfdale-DP Harpertown Dunnington

Bonnell / Saltwell	45 nm Silverthorne Diamondville Pineview Lincroft Tunnel Creek Stellarton Sodaville Groveland 32 nm Cedarview Penwell Cloverview Berryville Centerton

Nehalem / Westmere	45 nm Clarksfield Lynnfield Jasper Forest Bloomfield Gainestown (Nehalem-EP) Beckton (Nehalem-EX) 32 nm Arrandale Clarkdale Gulftown (Westmere-EP) Westmere-EX

Sandy Bridge / Ivy Bridge	32 nm Sandy Bridge Sandy Bridge-E Gladden 22 nm Ivy Bridge Ivy Bridge-EP Ivy Bridge-EX

Haswell / Broadwell	22 nm Haswell 14 nm Broadwell

Silvermont / Airmont	22 nm Valleyview Tangier Anniedale 14 nm Cherryview

Skylake/Kaby Lake/Coffee Lake/Cannonlake	14 nm Skylake Kaby Lake Coffee Lake 10 nm Cannonlake

Goldmont	14 nm Goldmont

Future (Icelake/Tigerlake)	10 nm Icelake Tigerlake

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