List of Intel Pentium II microprocessors

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

This list is incomplete; you can help by adding missing items with reliable sources.

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 KiB 66 MT/s 3.5× 2.8 V
34.8 W
May 7, 1997
$636
Pentium II 266[3][4]
  • SL265 (C0)
  • SL28L (C0)
  • SL2HC (C1)
  • SL2QB (C1)
  • SL269 (C0)
  • SL2PV (C0)
  • SL2HE (C1)
  • SL2QD (C1)
 267 MHz 512 KiB 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[7][8]
  • SL28R (C0)
  • SL2MZ (C0)
  • SL2HA (C1)
  • SL2QC (C1)
 300 MHz 512 KiB 66 MT/s 4.5× 2.8 V
43 W
  • Slot 1
 May 7, 1997
  • 80522PX300512EC
  • B80522PX300512EC
 $1981
  1. Intel released versions with ECC L2 cache on July 14, 1997 at 233 MHz for $666 (OEM) and at 266 MHz for $805 (OEM)[lower-alpha 2]

"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 KiB 66 MT/s 4× 2.0 V
16.8 W
January 26, 1998[9]
  • B80523P266512E
Pentium II 300
  • SL2VY (dA1)
  • SL35V (dA1)
  • SL2W8 (dB0)
  • SL2YK (dB0)
 300 MHz 512 KiB 66 MT/s 4.5× 2.0 V
18.6 W
  • Slot 1
 January 26, 1998[9]
  • B80523P300512E
Pentium II 333
  • SL2KA (dA0)
  • SL2QF (dA0)
  • SL2S5 (dA1)
  • SL2QH (dA1)
  • SL2ZP (dA1)
  • SL2TV (dB0)
  • SL2WY (dB0)
 333 MHz 512 KiB 66 MT/s 5× 2.0 V
20.6 W
  • Slot 1
 January 26, 1998[9]
  • 80523PX333512 also B80523P333512E (No.98350199-0239)
 $722
Pentium II Overdrive[12][13]
  • SL2KE (TdB0)
  • SL3EA (TdB0)
  • SL2K3
 333 MHz 512 KiB 66 MT/s 5× 3.3 V
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 KiB 100 MT/s 3.5× 2.0 V
21.5 W
  • Slot 1
 April 15, 1998[14]
  • 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 KiB 100 MT/s 4× 2.0 V
24.3 W
  • Slot 1
 April 15, 1998[14]
  • BX80523U400512E
  • 80523PY400512PE
 $824
Pentium II 450
  • SL2U7 (dB0)
  • SL2WB (dB0)
  • SL358 (dB0)
  • SL37H (dB0)
 450 MHz 512 KiB 100 MT/s 4.5× 2.0 V
27.1 W
  • Slot 1
 August 24, 1998[15]
  • 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 II 233
  • SL2KH (mdA0)
  • SL2RQ (mdB0)
  • SL2U8 (mDB0)
 233 MHz 512 KiB 66 MT/s 3.5× 1.6 V
9.0 W
April 2, 1998
  • PMD23305001AA
  • PMD23305002AB
  • PME23305001AA
  • 80523TX233512
 $542
Mobile Pentium II 266
  • SL2KJ (mdA0)
  • SL2RR (mdB0)
  • SL2U9 (mDB0)
 267 MHz 512 KiB 66 MT/s 4× 1.6 V
10.3 W
  • MMC-1
  • MMC-2
 April 2, 1998
  • PMD26605001AA
  • PMD26605002AB
  • PME26605001AA
  • 80523TX266512
 $772
Mobile Pentium II 300
  • SL2RS (mdB0)
  • SL2Y7 (mDB0)
 300 MHz 512 KiB 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 KiB 66 MT/s 4× 1.6 V
10.3 W
January 25, 1999
  • KP80524KX266256
  • KC80524KX266256
  • PMG26602002AA
 $187
Mobile Pentium II 300PE
  • SL3HJ (mdpA0)
  • SL32R (mdbA0)
  • SL32N (mdxA0)
 300 MHz 256 KiB 66 MT/s 4.5× 1.6 V
11.6 W
  • μPGA2
  • BGA2
  • MMC-2
 January 25, 1999
  • KP80524KX300256
  • KC80524KX300256
  • PMG30002002AA
 $321
Mobile Pentium II 333
  • SL3HK (mdpA0)
  • SL32S (mdbA0)
  • SL32P (mdxA0)
  • SL3KG
 333 MHz 256 KiB 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 KiB 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 KiB 66 MT/s 6× 1.55 or 1.50[16] V
13.1 W
  • μPGA2
  • BGA2
  • MMC-2
 June 14, 1999
  • PMG40002002AA KP80524TX400256
 $530

See also

References
  1. Pentium II 266(C0)
  2. Pentium II 266
  3. Pentium II 266(C0)
  4. Pentium II 266
  5. Pentium II 300(C0)
  6. Pentium II 300
  7. Pentium II 300(C0)
  8. Pentium II 300
  9. https://www.intel.com/pressroom/archive/releases/1998/dp012698.htm
  10. Pentium II Overdrive(dB0)
  11. Pentium II Overdrive
  12. Pentium II Overdrive(dB0)
  13. Pentium II Overdrive
  14. "New Intel® Pentium® II and Celeron® Processors Bring Optimized Performance to Computer Systems". Intel. Retrieved 2019-03-15.
  15. "Intel News Release". Intel. Retrieved 2018-05-10.
  16. 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
  17. "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.
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