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Cyrix M II
  Cyrix M II-233GP, 66 MHz Bus, Dark
  Cyrix M II-266GP, 66 MHz Bus
  Cyrix M II-300GP, 66 MHz Bus
  Cyrix M II-300GP, 66 MHz Bus, Dark
  Cyrix M II-300GP, 75 MHz Bus
  Cyrix M II-333GP, 66 MHz Bus, Silver
  Cyrix M II-333GP, 75 MHz Bus
  Cyrix M II-333GP, 83 MHz Bus, Engineering Sample
  Cyrix M II-366GP, 100 MHz Bus
  Cyrix M II-400GP, 95 MHz Bus
» Cyrix overview
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The Cyrix MII Processor
After Cyrix was purchased by National Semiconductor in 1997 they terminated their foundry agreement with IBM. National fabricated their own chips and the 6x86MX was re-named MII. Compared to early 6x86MX CPUs the MII had some enhancements to its processor core. Heat output was reduced allowing it to rise to clock speeds over 220MHz. The MII also required non-standard bus speeds at 75 or 83MHz on socket 7 boards and therefore had some troubles with stability.
 
Reference:  Cyrix M2 Processor FAQ
Cyrix M II-233GP, 66 MHz Bus, Dark
Cyrix M II-233GP, 66 MHz Bus, Dark Top Side
M II-233GP
66Mhz Bus 3.x
2.9V
FAN/HEATSINK REQUIRED
(C)(M) 1995-1997
CYRIX 3LGEM847XH
Cyrix M II-233GP, 66 MHz Bus, Dark Back Side
CORP. CYRIX
1995-1998 USA
Made by National Semiconductor
 
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Core Frequency:200 MHz
Board Frequency:66 MHz
Clock Multiplier:3.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1997
Manufactured:week 47/1998
Made in:USA
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix M II-266GP, 66 MHz Bus
Cyrix M II-266GP, 66 MHz Bus Top Side
M II-266GP
66MHZ BUS 3X
2.9V
FAN/HEATSINK REQUIRED
Cyrix M II-266GP, 66 MHz Bus Back Side
(c)(M)1995-1997
CYRIX
V1SH2851AG
Made by National Semiconductor
 
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Core Frequency:200 MHz
Board Frequency:66 MHz
Clock Multiplier:3.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1998
Manufactured:week 51/1998
Made in:USA
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix M II-300GP, 66 MHz Bus
Cyrix M II-300GP, 66 MHz Bus Top Side
M II-300GP
66MHz Bus 3.5x
2.9V
FAN/HEATSINK REQUIRED
Cyrix M II-300GP, 66 MHz Bus Back Side
COPYRIGHT USA
(c)(M)1995-1997
CYRIX USA
GKKCM820D
CANADA
Made by IBM
 
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Core Frequency:231 MHz
Board Frequency:66 MHz
Clock Multiplier:3.5
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1998
Manufactured:week 20/1998
Made in:Canada
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix M II-300GP, 66 MHz Bus, Dark
Cyrix M II-300GP, 66 MHz Bus, Dark Top Side
M II-300GP
66MHz Bus 3.5x
2.9V
FAN/HEATSINK REQUIRED
(C)(M) 1995-1997
CYRIX 3LGEM906XA
Cyrix M II-300GP, 66 MHz Bus, Dark Back Side
Made by National Semiconductor
 
add comment
Core Frequency:231 MHz
Board Frequency:66 MHz
Clock Multiplier:3.5
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1998
Manufactured:week 06/1999
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix M II-300GP, 75 MHz Bus
Cyrix M II-300GP, 75 MHz Bus Top Side
M II-300GP
75MHZ BUS 3X
2.9V
FAN/HEATSINK REQUIRED
Cyrix M II-300GP, 75 MHz Bus Back Side
COPYRIGHT USA
(C)(M)1995-1997
CYRIX USA
3MSCM833AR
Made by National Semiconductor
 
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Core Frequency:225 MHz
Board Frequency:75 MHz
Clock Multiplier:3.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1998
Manufactured:week 33/1998
Made in:USA
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix M II-333GP, 66 MHz Bus, Silver
Cyrix M II-333GP, 66 MHz Bus, Silver Top Side
M II-333GP
66MHZ BUS 4X
2.2V
FAN/HEATSINK REQUIRED
45L9308 U150095N
Cyrix M II-333GP, 66 MHz Bus, Silver Back Side
CORP. CYRIX
1995-1998
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Core Frequency:264 MHz
Board Frequency:66 MHz
Clock Multiplier:4.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Voltage:2.2 V
Introduced:1998
Manufactured:week 30/1998
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix M II-333GP, 75 MHz Bus
Cyrix M II-333GP, 75 MHz Bus Top Side
M II-333GP
75MHZ BUS 3.5X
2.9V
FAN/HEATSINK REQUIRED
Cyrix M II-333GP, 75 MHz Bus Back Side
(C)(M)1995-1998
CYRIX
V2SP8912AB
Made by National Semiconductor
 
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Core Frequency:265 MHz
Board Frequency:75 MHz
Clock Multiplier:3.5
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1998
Manufactured:week 12/1999
Made in:USA
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix M II-333GP, 83 MHz Bus, Engineering Sample
Cyrix M II-333GP, 83 MHz Bus, Engineering Sample Top Side
M II-333GP
83Mhz Bus 3.x
2.9V ES
FAN/HEATSINK REQUIRED
Cyrix M II-333GP, 83 MHz Bus, Engineering Sample Back Side
COPYRIGHT USA
(C)(M)1995-1997
CYRIX USA
GMKDM826H
CANADA
Made by IBM
 
 
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Core Frequency:250 MHz
Board Frequency:83 MHz
Clock Multiplier:3.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1997
Manufactured:week 26/1998
Made in:Canada
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix M II-366GP, 100 MHz Bus
Cyrix M II-366GP, 100 MHz Bus Top Side
M II-366GP
100MHZ BUS 2.5X
2.9V
28A6-13
FAN/HEATSINK REQUIRED
Cyrix M II-366GP, 100 MHz Bus Back Side
(C)(M)1995-1998
CYRIX
V7SPC919AL
Made by National Semiconductor
 
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Core Frequency:250 MHz
Board Frequency:100 MHz
Clock Multiplier:2.5
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:1997
Manufactured:week 19/1999
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix M II-400GP, 95 MHz Bus
Cyrix M II-400GP, 95 MHz Bus Top Side
M II-400GP
95MHZ BUS 3.0X
2.2V
M2400D095-22
FAN/HEATSINK REQUIRED
Cyrix M II-400GP, 95 MHz Bus Back Side
(C)(M)1995-1998
CYRIX
VBSDD923AN
Made by National Semiconductor
 
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Core Frequency:385 MHz
Board Frequency:95 MHz
Clock Multiplier:3.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:6,500,000
Circuit Size:0.35
Voltage:2.2 V
Introduced:1998
Manufactured:week 23/1999
Made in:USA
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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