Cyrix identification

4x86 | 5x86 | 6x86 | MII | Geode GX1 | Geode GXLV | Media GX

  4x86 identification  
Related links: 80486
 123 4567 
Cx486DX2-V66GP 
 
7. Temperature range
PCommercial 0 - 70°C
 
 6. Package type
GCeramic PGA
QPlastic Quad Flat Pak
 
  5. Frequency
3333 MHz
4040 MHz
5050 MHz
6666 MHz
8080 MHz
 
   4. Operating voltage
Blank5 V
V3.3V
 
     3. Clock multiplier
BlankProcessor runs at the bus frequency
2Processor runs at 2x the bus frequency
4Processor runs at 3x the bus frequency
 
      2. Processor features
DXVersion with integrated co-processor
 
       1. Part number
48680486 processor

  5x86 identification  
Related links: 5x86
1 234 
5x86-120GP 
 
4. Temperature range
PCommercial 0 - 70°C
 
 3. Package type
GCeramic PGA
QPlastic Quad Flat Pak
 
  2. Frequency
100100 MHz
120120 MHz
133133 MHz
 
    1. Part number
5x865x86 family

  6x86 identification  
Related links: 6x86 | 6x86L | 6x86MX
1 2 34 
6x86-PR200+GP 
 
4. Temperature range
PCommercial 0 - 70°C
 
 3. Package type
GCeramic PGA
 
   2. Frequency rating
P133133 MHz (rated), 110 MHz (actual)
P150150 MHz (rated), 120 MHz (actual)
PR150150 MHz (rated)
P166166 MHz (rated), 133 MHz (actual)
PR166166 MHz (rated)
150 MHz (actual, 60 MHz FSB)
133 MHz (actual, 66 MHz FSB)
PR200200 MHz (rated)
166 MHz (actual, 66 MHz FSB)
150 MHz (actual, 75 MHz FSB)
PR233233 MHz (rated), 188 MHz (actual, 75 MHz FSB)
PR266266 MHz (rated), 208 MHz (actual, 83 MHz FSB)
 
     1. Part number
6x866x86 processor
6x86LLow power version of 6x86 processor
6x86MX6x86 processor with MMX instruction set

  MII identification  

Part number, printed on the front of the CPU, provides basic information about the CPU like the rated speed and package type. Please see the table below for more information on how to decode the part number.

The part number does not provide all necessary information for processor installation, you will need more data from the CPU. Bus frequency, clock multiplier and voltage are required to set the motherboard correctly for the processor. Non-rated processor speed can be calculated as "bus frequency" x "clock multiplier".

Engineering sample letters are only present on the engineering samples of the processor. Production versions of the chip don't have "ES" letters.

Cyrix MII identification

Related links: MII
1 234 
MII-300GP 
 
4. Temperature range
PCommercial 0 - 70°C
 
 3. Package type
GCeramic PGA
 
  2. Frequency
200200 MHz (rated), 166 MHz (actual, 66 MHz FSB)
233233 MHz (rated)
200 MHz (actual, 66 MHz FSB)
187.5 MHz (actual, 75 MHz FSB)
266266 MHz (rated)
200 MHz (actual, 66 MHz FSB)
207 MHz (actual, 83 MHz FSB)
300300 MHz (rated)
233 MHz (actual, 66 MHz FSB)
225 MHz (actual, 75 MHz FSB)
333333 MHz (rated)
266 MHz (actual, 66 MHz FSB)
262 MHz (actual, 75 MHz FSB)
250 MHz (actual, 83 MHz FSB)
350350 MHz (rated)
250 MHz (actual, 83 MHz FSB)
270 MHz (actual, 90 MHz FSB)
366366 MHz (rated), 250 MHz (actual, 100 MHz FSB)
400400 MHz (rated), 285 MHz (actual, 95 MHz FSB)
433433 MHz (rated), 300 MHz (actual, 100 MHz FSB)
 
    1. Microprocessor family
MIIM II processor

  Geode GX1 identification  
Related links: GX1
1 23 4 
GX1-300B-2.0 
 
4. Operating voltage
1.61.6V
1.81.8V
2.02.0V
 
  3. Package type
BBGA
PStaggered Ceramic PGA
 
   2. Frequency
200200 MHz
233233 MHz
266266 MHz
300300 MHz
 
     1. Microprocessor family
GX1GX1 processor

  Geode GXLV identification  
1 23 4 5 
GXLV-266B 2.9 85C 
 
5. Operating temperature
70C70 °C
85C85 °C
 
  4. Operating voltage
2.22.2V
2.52.5V
2.92.9V
 
    3. Package type
BBGA
PStaggered Ceramic PGA
 
     2. Frequency
166166 MHz
200200 MHz
233233 MHz
266266 MHz
 
       1. Microprocessor family
GX1GX1 processor

  Media GX identification  

To identify Cyrix Media GX processor use the part number printed on the chip. The part number contains such information as processor speed, package type, core voltage and maximum case temperature. See the table below for interpretation of that number.

Cyrix GXm identification

Related links: MediaGX
1 2 3 4 5 
GXm-200GB 2.9V 85C 
 
5. Operating temperature
Blank70 °C
60C60 °C
80C80 °C
85C85 °C
 
  4. Operating voltage
2.2V2.2V
2.9V2.9V
 
    3. Package type
BBGA
PStaggered Ceramic PGA
 
      2. Frequency
180180 MHz
200200 MHz
233233 MHz
266266 MHz
300300 MHz
 
        1. Microprocessor family
GXmMediaGX processor

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