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The Cyrix 5x86 Processor
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The 5x86 processor utilizes efficient fifth-generation (Pentium class) architectural features to significantly improve performance while minimizing transistor count. It achieves this performance using a superpipelined architecture in the integer unit combined with data forwarding, branch prediction, a 16-KByte unified write-back cache, single-cycle instruction decode, and single-cycle execution.
The processor's built-in power-saving features automatically power down the Floating Point Unit (FPU) and other idle internal circuits, while the System Management Mode (SMM) conserves power flowing to system peripherals.
The Cyrix 5x86 processor is an example of Cyrix's strategy to design next-generation processor architectures that leverage existing designs. It is available in a 168-pin PGA or a 208-pin QFP package with standard 486 pinout. Though it's installed in a P24D socket on a 486 motherboard, the motherboard must have a BIOS that will support the 5x86.
References:
Cyrix 5x86 Processor Brief
Cyrix 5x86 Processor FAQs
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Cyrix 5x86-100QP |
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| Core Frequency: | 100 MHz | | Board Frequency: | 33 MHz |
| Clock Multiplier: | 3.0 | | Data bus (ext.): | 32 Bit | | Address bus: | 32 Bit | | Transistors: | 2,000,000 | | Circuit Size: | 0.65 µ | | Voltage: | 3.45 V | | Introduced: | 08/1995 | | Manufactured: | week 44/1995 | | L1 Cache: | 16 KB | | CPU Code: | 5x86
M9 | | Package Type: | Plastic
PGA-168 |
| Socket: |
3 |
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