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Cyrix 686
  Cyrix 6x86-P150+GP
  Cyrix 6x86-P150+GP, no Voltage Markings
  Cyrix 6x86-P150+GP w/ Capacitors
  Cyrix 6x86-P166+GP 3.53V
  Cyrix 6x86-P166+GP
  Cyrix 6x86-PR166+GP
  Cyrix 6x86L-P150+GP
  Cyrix 6x86L-PR166+GP
  Cyrix 6x86L-PR200+GP
  Cyrix 6x86L-PR200+GP, Variant
  Cyrix 6x86MX-PR166
  Cyrix 6x86MX-PR200, 75 MHz Bus
  Cyrix 6x86MX-PR200, 66 MHz Bus
  Cyrix 6x86MX-PR233
  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 Gx86 GX-133BP
  Cyrix MediaGX GX-120BP
  Cyrix MediaGX GX-133BP
  Cyrix MediaGX GX-150BP
  Cyrix MediaGX GXI-166BP
  Cyrix MediaGX GXI-180BP
  Cyrix MediaGX GXI-180BP (silver)
  Cyrix MediaGX GXm-233BP
  Cyrix MediaGX GXm-266BP
  Cyrix MediaGX GXm-180GP
  Cyrix MediaGX GXm-200GP
  Cyrix MediaGX GXm-200GP 85C
  Cyrix MediaGX GXm-233GP
  Cyrix MediaGX GXm-266GP
» Cyrix overview
» all 686 chips
 
The Cyrix 6x86 Processor
1995 marketing logo
Cyrix entered the fifth generation processor market with the 6x86 processor, formerly projected as the M1. As a successful and cheaper (often less than half the cost) alternative to the Intel Pentium, it is pin- and voltage-compatible with it. Cyrix gave it the 6x86 name in reference to some of its more advanced features, which it calls "sixth generation". In reality, the processor is comparable in power and architecture to the fifth-generation Pentium.
 
The 6x86 is not a Pentium clone. Clones are exact or near-exact copies, usually being reversed engineered or based on licensed code. The 6x86 is based on an original Cyrix design. It incorporates several advanced architectural features that allow it to outperform a Pentium of equal clock speed. For this reason Cyrix helped invent the "P-Rating" system. This was an advantage to help people make a valid comparism but also caused some confusion when setting the appropriate clock speed on the motherboard.
 
The Cyrix 6x86 range has the most powerful processor core of any x86 processor of its generation. Unfortunately, like the AMD K5, it also has a very slow floating point math capability and so was a very poor games and 3D performer.
 
The processor is designed for Socket 7 and is available in several clock speeds, some of them rather unusual. The 6x86 PR200 (150 Mhz) processor introduced non-standard bus speeds up to 75 MHz - many motherboards and PCI cards did not support this speeds: Since the PCI bus runs at half of the mainboard bus speed, you are increasing the PCI bus to 37.5 MHz with a bus speed of 75 MHz. Several PCI cards, especially some graphics cards, did not run correctly with this overclocked bus.
 
References:  Cyrix 6x86 Processor Brief  Cyrix 6x86 Processor FAQ  Cyrix Press Releases
Cyrix 6x86-P150+GP
Cyrix 6x86-P150+GP Top Side
6x86-P150+GP
120MHz
3.3V or 3.52V
Cyrix 6x86-P150+GP Back Side
add comment
Core Frequency:120 MHz
Board Frequency:60 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.65
Voltage:3.45 V
Introduced:October 6, 1995
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix 6x86-P150+GP, no Voltage Markings
Cyrix 6x86-P150+GP, no Voltage Markings Top Side
6x86-P150+GP
120MHz
Cyrix 6x86-P150+GP, no Voltage Markings Back Side
(c) (m) 1995 Cyrix USA
G8L4606J
add comment
Core Frequency:120 MHz
Board Frequency:60 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.65
Voltage:3.3 V
Introduced:02/1996
Manufactured:week 06/1996
Made in:USA
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
Cyrix 6x86-P150+GP w/ Capacitors
Cyrix 6x86-P150+GP w/ Capacitors Top Side
6x86-P150+GP
120MHz
3.3V or 3.52V
Cyrix 6x86-P150+GP w/ Capacitors Back Side
(C)(M) Cyrix USA
G8DC5624F
add comment
Core Frequency:120 MHz
Board Frequency:60 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.65
Voltage:3.45 V
Introduced:02/1996
Manufactured:week 24/1996
Made in:USA
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix 6x86-P166+GP 3.53V
Cyrix 6x86-P166+GP 3.53V Top Side
6x86-P166+GP
133MHz
3.52V (028)
Cyrix 6x86-P166+GP 3.53V Back Side
(C)(M)1995 Cyrix USA
G8DA5629C
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.65
Voltage:3.45 V
Introduced:02/1996
Made in:USA
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix 6x86-P166+GP
Cyrix 6x86-P166+GP Top Side
6x86-P166+GP
133MHz
3.3V or 3.52V
Cyrix 6x86-P166+GP Back Side
(C)(M)1995 Cyrix USA
G9DEA651H
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.65
Voltage:3.45 V
Introduced:02/1996
Manufactured:week 51/1996
Made in:USA
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
Cyrix 6x86-PR166+GP
Cyrix 6x86-PR166+GP Top Side
6x86-PR166+GP
133MHz
3.3V or 3.52V
Cyrix 6x86-PR166+GP Back Side
(C)(M)1995 Cyrix USA
G9LNA709B
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.65
Voltage:3.45 V
Introduced:02/1996
Manufactured:week 09/1997
Made in:USA
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
The earlier versions of the 6x86 had problems with heat and power consumption. Responding to customer complaints, Cyrix came out with a lower powered version called the 6x86L. This processor reduces power consumption by 25% or more compared to the original 6x86. It uses a smaller, 0.35 micron circuit size and split voltage much like the Pentium MMX (3.3V external, 2.8V internal).
Cyrix 6x86L-P150+GP
Cyrix 6x86L-P150+GP Top Side
6x86L-P150+GP
120MHz
2.8V
Cyrix 6x86L-P150+GP Back Side
COPYRIGHT USA
1995 CYRIX
GAKJ3650A
MADE IN
CANADA
add comment
Core Frequency:120 MHz
Board Frequency:60 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.35
Core / I/O Voltage:2.8 / 3.3 V
Introduced:02/1996
Manufactured:week 50/1996
Made in:Canada
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix 6x86L-PR166+GP
Cyrix 6x86L-PR166+GP Top Side
6x86L-PR166+GP
133MHz
3.3V
FAN/HEATSINK REQUIRED
Cyrix 6x86L-PR166+GP Back Side
(C)(M)1995 Cyrix USA
GADJ3707B
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.35
Core / I/O Voltage:2.8 / 3.3 V
Introduced:02/1996
Manufactured:week 07/1997
Made in:USA
L1 Cache:16 KB
CPU Code:6x68
M1
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
Cyrix 6x86L-PR200+GP
Cyrix 6x86L-PR200+GP Top Side
6x86L-PR200+GP
150MHz
3.3V
FAN/HEATSINK REQUIRED
Cyrix 6x86L-PR200+GP Back Side
(C)(M)1995 Cyrix USA
GADJ3701M
The 6x86 PR200 processor introduced non-standard bus speeds up to 75 MHz - many motherboards and PCI cards did not support this speeds: Since the PCI bus runs at half of the mainboard bus speed, you are increasing the PCI bus to 37.5 MHz with a bus speed of 75 MHz. Several PCI cards, especially some graphics cards, did not run correctly with this overclocked bus.
 
Comment by VMUNIX (andres_leitner[at]yahoo.com.ar):
For a while, the most powerfull x86 processor.
 
Comment by morkork:
Yes, in April 1996 a Cyrix press release announced "Cyrix Introduces the World's Fastest Windows 95 PCs"
 
add comment
Core Frequency:150 MHz
Board Frequency:75 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.35
Core / I/O Voltage:2.8 / 3.3 V
Introduced:June 3, 1996
Manufactured:week 01/1997
Made in:USA
L1 Cache:16 KB
CPU Code:6x68L
M1L
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
Cyrix 6x86L-PR200+GP, Variant
Cyrix 6x86L-PR200+GP, Variant Top Side
6x86L-PR200+GP
150MHz
Core: 2.8V I/O: 3.3V
Fan/Heatsink Required
Cyrix 6x86L-PR200+GP, Variant Back Side
COPYRIGHT USA
1995 CYRIX
GAKQ3715S
MADE IN
CANADA
add comment
Core Frequency:150 MHz
Board Frequency:75 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,000,000
Circuit Size:0.35
Core / I/O Voltage:2.8 / 3.3 V
Introduced:June 3, 1996
Manufactured:week 10/1997
Made in:Canada
L1 Cache:16 KB
CPU Code:6x68L
M1L
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
The Cyrix 6x86MX Processor
The successor to the 6x86 and 6x86L is the 6x86MX (M2), introduced May 30, 1997 and intended to compete with AMD's K6 and Intel's Pentium MMX. The 6x86MX is an evolutionary step from the 6x86 and is very similar to it in internal function. The 6x86MX supports the MMX extension and also features several other improvements over the original 6x86 chip. The internal cache was increased from 16 to 64 KB, a 256 byte additional pre-cache was added to help improve efficiency in how the regular level 1 cache is operated, the Branch Prediction was improved and the internals of the chip have been optimized for 32-bit operation.
 
References:  Cyrix 6x86 Processor FAQ  Cyrix Press Releases  Cyrix 6x86MX Press Tour
Cyrix 6x86MX-PR166
Cyrix 6x86MX-PR166 Top Side
Cyrix
6x86MX-PR166
66MHz Bus 2.0x
2.9V
FAN/HEATSINK REQUIRED
Cyrix 6x86MX-PR166 Back Side
COPYRIGHT USA
(c)(M)1995-1997
Cyrix USA
GEDD7733AM
add comment
Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
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:May 30, 1997
Manufactured:week 33/1997
Made in:USA
L1 Cache:64 KB
CPU Code:M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
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Cyrix 6x86MX-PR200, 75 MHz Bus
Cyrix 6x86MX-PR200, 75 MHz Bus Top Side
Cyrix
6x86MX-PR200
75MHz Bus 2x
2.9V
FAN/HEATSINK REQUIRED
Cyrix 6x86MX-PR200, 75 MHz Bus Back Side
COPYRIGHT USA
(C)(M)1995-1997
Cyrix USA
GEKF7729F
CANADA
add comment
Core Frequency:150 MHz
Board Frequency:75 MHz
Clock Multiplier:2.0
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:May 30, 1997
Manufactured:week 29/1997
Made in:Canada
L1 Cache:64 KB
CPU Code:M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
Cyrix 6x86MX-PR200, 66 MHz Bus
Cyrix 6x86MX-PR200, 66 MHz Bus Top Side
Cyrix
6x86MX-PR200
66MHz Bus 2.5x
2.9V
FAN/HEATSINK REQUIRED
Cyrix 6x86MX-PR200, 66 MHz Bus Back Side
COPYRIGHT USA
(c)(M)1995-1997
Cyrix USA
GEDD8741T
add comment
Core Frequency:166 MHz
Board Frequency:66 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:May 30, 1997
Manufactured:week 41/1997
Made in:USA
L1 Cache:64 KB
CPU Code:M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
Cyrix 6x86MX-PR233
Cyrix 6x86MX-PR233 Top Side
Cyrix
6x86MX-PR233
75MHz Bus 2.5x
2.9V
FAN/HEATSINK REQUIRED
Cyrix 6x86MX-PR233 Back Side
COPYRIGHT USA
(c)(M)1995-1997
CYRIX USA
GFKFF801U
CANADA
add comment
Core Frequency:188 MHz
Board Frequency:75 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:May 30, 1997
Manufactured:week 01/1998
Made in:Canada
L1 Cache:64 KB
CPU Code:M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
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
 
add comment
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
top of page
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
 
add comment
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
top of page
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
 
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 20/1998
Made in:Canada
L1 Cache:64 KB
CPU Code:6x68
M2
Package Type:Ceramic
PGA-296
Goldcap
Socket: 7
top of page
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
top of page
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
 
add comment
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
top of page
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
add comment
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
top of page
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
 
add comment
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
top of page
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
 
 
add comment
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
top of page
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
 
add comment
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
top of page
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
 
add comment
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
top of page
The Cyrix MediaGX Processor
In 1996 Cyrix released the MediaGX CPU, which integrated all of the major discrete components of a PC, including memory controller, graphics, sound and PCI controller, onto a single chip. Initially based on the old 5x86 technology and running at 120 or 133 MHz, its performance was widely criticized but its low price made it quite successful. Though it required a special motherboard and was not pin compatible with the Pentium, it was the cheapest route into a Pentium class system available on the market. Later versions of the MediaGX ran at speeds of up to 333 MHz and added MMX support. A second chip was added to extend its video capabilities.
 
The MediaGX led to Cyrix's first big win, when Compaq used it in its lowest-priced Presario computers. This led to further MediaGX sales to Packard Bell and also seemed to give Cyrix legitimacy, as 6x86 sales to Packard Bell and eMachines quickly followed.
 
But because it seemed to have so much potential in the low-cost market, it dragged Cyrix's attention away from the main market - high-performance desktop parts - and attracted the interest of other companies, notably National Semiconductor, which bought Cyrix in July 1997 largely on the strength of the MediaGX design, and over the next year or so proceeded to mismanage the company into oblivion.
 
References:  Official Announcement  MediaGX Processor FAQ  Press Tour  Architecture Overview
Cyrix Gx86 GX-133BP
Cyrix Gx86 GX-133BP Top Side
Cyrix
Gx86
GX-133BP
3.6V
(C)(M)1995 Cyrix USA
CANADA
G8KA5649X
Cyrix Gx86 GX-133BP Back Side
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Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Circuit Size:0.35
Voltage:3.6 V
Manufactured:week 49/1996
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GX-120BP
Cyrix MediaGX GX-120BP Top Side
Cyrix
MediaGX
PROCESSOR
GX-120BP 3.3 or 3.6V
(C)(M) 1995 Cyrix USA
CANADA
G8KA5704L
Cyrix MediaGX GX-120BP Back Side
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Core Frequency:120 MHz
Board Frequency:60 MHz
Clock Multiplier:2.0
Circuit Size:0.35
Voltage:3.3 V
Introduced:June 6, 1997
Manufactured:week 04/1997
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GX-133BP
Cyrix MediaGX GX-133BP Top Side
Cyrix
MediaGX
PROCESSOR
GX-133BP 3.6V
(C)(M) 1996 Cyrix USA
CANADA
GBKD8707N
Cyrix MediaGX GX-133BP Back Side
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Core Frequency:133 MHz
Board Frequency:66 MHz
Clock Multiplier:2.0
Circuit Size:0.35
Voltage:3.3 V
Introduced:June 6, 1997
Manufactured:week 07/1997
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GX-150BP
Cyrix MediaGX GX-150BP Top Side
Cyrix
MediaGX
PROCESSOR
GX-150BP 5X 3.6V
(C)(M) 1996 Cyrix USA
CANADA
GBKJ9738
Cyrix MediaGX GX-150BP Back Side
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Core Frequency:150 MHz
Board Frequency:60 MHz
Clock Multiplier:2.5
Circuit Size:0.35
Voltage:3.3 V
Introduced:June 6, 1997
Manufactured:week 38/1997
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GXI-166BP
Cyrix MediaGX GXI-166BP Top Side
Cyrix
MediaGX
PROCESSOR
GXI-166BP 2.9V
(C)(M) 1995-1997 Cyrix USA
CANADA
GAKC5749B
Cyrix MediaGX GXI-166BP Back Side
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Core Frequency:166 MHz
Board Frequency:66 MHz
Clock Multiplier:2.5
Circuit Size:0.35
Voltage:2.9 V
Introduced:June 6, 1997
Manufactured:week 49/1997
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GXI-180BP
Cyrix MediaGX GXI-180BP Top Side
Cyrix
MediaGX
PROCESSOR
GXI-180BP 2.9V
(C)(M) 1995-1997 Cyrix USA
CANADA
GAKC5747A
Cyrix MediaGX GXI-180BP Back Side
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Core Frequency:180 MHz
Board Frequency:60 MHz
Clock Multiplier:3.0
Circuit Size:0.35
Voltage:2.9 V
Introduced:June 6, 1997
Manufactured:week 47/1997
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GXI-180BP (silver)
Cyrix MediaGX GXI-180BP (silver) Top Side
Cyrix
MediaGX
PROCESSOR
GXI-180BP 2.9V
(C)(M) 1995-1997 Cyrix USA
CANADA
GAKC5814A
Cyrix MediaGX GXI-180BP (silver) Back Side
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Core Frequency:180 MHz
Board Frequency:60 MHz
Clock Multiplier:3.0
Circuit Size:0.35
Voltage:2.9 V
Introduced:June 6, 1997
Manufactured:week 14/1998
Made in:Canada
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GXm-233BP
Cyrix MediaGX GXm-233BP Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-233BP 2.5V 85C
30157-33
(C)(M) 1995-1997 CYRIX
V5SF6934AD
Cyrix MediaGX GXm-233BP Back Side
Made by National Semiconductor
 
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Core Frequency:233 MHz
Board Frequency:66 MHz
Clock Multiplier:3.5
Circuit Size:0.35
Voltage:2.5 V
Introduced:March 18, 1998
Manufactured:week 34/1999
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GXm-266BP
Cyrix MediaGX GXm-266BP Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-266BP 2.9V 85C
30171-53
(C)(M) 1995-1997 CYRIX
R5SF5924AB
Cyrix MediaGX GXm-266BP Back Side
Made by National Semiconductor
 
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Core Frequency:266 MHz
Board Frequency:66 MHz
Clock Multiplier:4.0
Circuit Size:0.35
Voltage:2.9 V
Manufactured:week 24/1999
L1 Cache:16 KB
Package Type:Plastic/Metal
BGA-352
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Cyrix MediaGX GXm-180GP
Cyrix MediaGX GXm-180GP Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-180GP 2.9V
Cyrix MediaGX GXm-180GP Back Side
(C)(M)1995-1997 Cyrix USA
JAPAN
GJQBC923A
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Core Frequency:180 MHz
Board Frequency:60 MHz
Clock Multiplier:3.0
Circuit Size:0.35
Core / I/O Voltage:2.9 / 3.3 V
Introduced:June 6, 1997
Manufactured:week 23/1999
Made in:Japan
L1 Cache:16 KB
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix MediaGX GXm-200GP
Cyrix MediaGX GXm-200GP Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-200GP 2.9V 60C
Cyrix MediaGX GXm-200GP Back Side
COPYRIGHT USA
(C)(M)1995-1997
CYRIX USA
GGKC6805F
CANADA
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Core Frequency:200 MHz
Board Frequency:66 MHz
Clock Multiplier:3.0
Circuit Size:0.25
Core / I/O Voltage:2.9 / 3.3 V
Introduced:03/1998
Manufactured:week 05/1998
Made in:Canada
L1 Cache:16 KB
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix MediaGX GXm-200GP 85C
Cyrix MediaGX GXm-200GP 85C Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-200GP 2.2V 85C
Cyrix MediaGX GXm-200GP 85C Back Side
(C)(M)1995-1997
CYRIX
V5SK6923AB
Made by National Semiconductor
 
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Core Frequency:200 MHz
Board Frequency:66 MHz
Clock Multiplier:3.0
Circuit Size:0.25
Core / I/O Voltage:2.2 / 3.3 V
Introduced:03/1998
Manufactured:week 23/1999
L1 Cache:16 KB
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix MediaGX GXm-233GP
Cyrix MediaGX GXm-233GP Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-233GP 2.9V
Cyrix MediaGX GXm-233GP Back Side
(C)(M)1995-1997
CYRIX
R5SK6919AB
Donated by Christian Lederer. Thanks a lot!  
Made by National Semiconductor
 
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Core Frequency:233 MHz
Board Frequency:66 MHz
Clock Multiplier:3.5
Circuit Size:0.25
Core / I/O Voltage:2.9 / 3.3 V
Introduced:03/1998
Manufactured:week 19/1999
L1 Cache:16 KB
Package Type:Ceramic
PGA-296
Socket: 7
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Cyrix MediaGX GXm-266GP
Cyrix MediaGX GXm-266GP Top Side
Cyrix
MediaGX
PROCESSOR
MMX-ENHANCED
GXm-266GP 2.9V
Cyrix MediaGX GXm-266GP Back Side
(C)(M)1995-1997
CYRIX
V3SE3836AG
Made by National Semiconductor
 
add comment
Core Frequency:266 MHz
Board Frequency:66 MHz
Clock Multiplier:4.0
Circuit Size:0.25
Core / I/O Voltage:2.9 / 3.3 V
Introduced:03/1998
Manufactured:week 36/1998
L1 Cache:16 KB
Package Type:Ceramic
PGA-296
Socket: 7
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