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Cyrix identification


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

  4x86 identification  
Related links: 80486
  1 2 3   4 5 6 7  
Cx 486 DX 2 - V 66 G P  
     
7. Temperature range
P    Commercial 0 - 70°C
 
  6. Package type
G   Ceramic PGA
Q   Plastic Quad Flat Pak
 
    5. Frequency
33   33 MHz
40   40 MHz
50   50 MHz
66   66 MHz
80   80 MHz
 
      4. Operating voltage
Blank   5 V
V   3.3V
 
          3. Clock multiplier
Blank   Processor runs at the bus frequency
2   Processor runs at 2x the bus frequency
4   Processor runs at 3x the bus frequency
 
            2. Processor features
DX   Version with integrated co-processor
 
              1. Part number
486   80486 processor

  5x86 identification  
Related links: 5x86
1   2 3 4  
5x86 - 120 G P  
   
4. Temperature range
P    Commercial 0 - 70°C
 
  3. Package type
G   Ceramic PGA
Q   Plastic Quad Flat Pak
 
    2. Frequency
100   100 MHz
120   120 MHz
133   133 MHz
 
        1. Part number
5x86   5x86 family

  6x86 identification  
Related links: 6x86 | 6x86L | 6x86MX
1   2 3 4  
6x86 - PR200 G P  
   
4. Temperature range
P    Commercial 0 - 70°C
 
  3. Package type
G   Ceramic PGA
 
    2. Frequency rating
PR150   150 MHz rating
PR166   166 MHz rating
PR200   200 MHz rating
PR233   233 MHz rating
PR266   266 MHz rating
 
        1. Part number
6x86   6x86 processor
6x86L   Low power version of 6x86 processor
6x86MX   6x86 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   2 3 4  
MII - 300 G P  
   
4. Temperature range
P    Commercial 0 - 70°C
 
  3. Package type
G   Ceramic PGA
 
    2. Frequency
233   233 MHz
266   266 MHz
300   300 MHz
333   333 MHz
366   366 MHz
400   400 MHz
433   433 MHz
 
        1. Microprocessor family
MII   M II processor

  Geode GX1 identification  
Related links: GX1
1   2 3   4  
GX1 - 300 B - 2.0  
     
4. Operating voltage
1.6    1.6V
1.8   1.8V
2.0   2.0V
 
    3. Package type
B   BGA
P   Staggered Ceramic PGA
 
      2. Frequency
200   200 MHz
233   233 MHz
266   266 MHz
300   300 MHz
 
          1. Microprocessor family
GX1   GX1 processor

  Geode GXLV identification  
1   2 3   4   5  
GXLV - 266 B   2.9   85C  
       
5. Operating temperature
70C    70 °C
85C   85 °C
 
    4. Operating voltage
2.2   2.2V
2.5   2.5V
2.9   2.9V
 
        3. Package type
B   BGA
P   Staggered Ceramic PGA
 
          2. Frequency
166   166 MHz
200   200 MHz
233   233 MHz
266   266 MHz
 
              1. Microprocessor family
GX1   GX1 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 - 200 G B 2.9V 85C  
         
5. Operating temperature
Blank    70 °C
60C   60 °C
80C   80 °C
85C   85 °C
 
    4. Operating voltage
2.2V   2.2V
2.9V   2.9V
 
        3. Package type
B   BGA
P   Staggered Ceramic PGA
 
            2. Frequency
180   180 MHz
200   200 MHz
233   233 MHz
266   266 MHz
300   300 MHz
 
                1. Microprocessor family
GXm   MediaGX processor

Last modified: 2 Apr 2008
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