Intel A80487SX

FPU Information

General information
TypeCPU / Microprocessor
Frequency (MHz)  ? 15 - 25
Package169-pin Pin Grid Array
1.75" x 1.75" (4.45 cm x 4.45 cm)
 
Architecture / Microarchitecture
Data width32 bit
Floating Point UnitIntegrated
Level 1 cache size  ? 8 KB 4-way set associative unified code and data cache
Physical memory (GB)4
Low power featuresLow frequency operation - from 2 MHz to maximum frequency.
 
Electrical/Thermal parameters
Minimum/Maximum operating temperature (°C)  ? 0 - 85
Typical/Maximum power dissipation (W)0.5 (2 MHz) / 0.83 (2 MHz)
2 (16 MHz) / 2.89 (16 MHz)
2.38 (20 MHz) / 3.3 (20 MHz)
2.5 (25 MHz) / 3.85 (25 MHz)
 
Notes
  • The co-processor should be installed into OverDrive processor socket
  • The co-processor supports low power version of 80486 processors.

Pictures (1)

Intel A80487SX

169-pin ceramic PGA

Intel 80487 co-processor didn't have speed marked on the chip. The co-processor could upgrade 80486SX CPUs running at speeds from 16 MHz to 25 MHz, possibly 33 MHz too.
Intel A80487SX

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