IBM 5x86C

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IBM 5x86C
IBM 5x86-3V3100GF.jpg
IBM 5x86C Processor
General Info
Common manufacturer(s)
Architecture and classification
Min. feature size0.65μm
Instruction setx86
Physical specifications

The IBM 5x86C is an IBM branded and produced version of the Cyrix-designed Cyrix Cx5x86 CPU.

Previous IBM x86 processors, IBM 386SLC and IBM 486SLC, were based on modified Intel designs.


  • iDX4WB pinout, 168 pins
  • Socket 3
  • 2.0 million transistors on 0.65 micrometre process
  • 144 mm² die
  • 3.3 volt supply
  • 16 kilobyte unified level-one cache

75 MHz capable edition for 25 MHz (25x3) front side bus
100 MHz[permanent dead link] capable edition for 33 MHz (33x3) front side bus