IBM 6x86/6x86MX

80486◄ 6x86

The Cyrix 6x86 (codename M1) is a sixth-generation, 32-bit x86-compatible microprocessor designed by Cyrix and manufactured by IBM and SGS-Thomson. It was originally released in 1996.

The 6x86 is superscalar and superpipelined and performs register renaming, speculative execution, out-of-order execution, and data dependency removal. However, it continued to use native x86 execution and ordinary microcode only, like Centaur's WinChip, unlike competitors Intel and AMD which introduced the method of dynamic translation to micro-operations with Pentium Pro and K5.

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IBM 6x86

IBM 6x86 P150+

IBM26 6x86-2V2P150GE
Specification Details

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Type	Central processing unit / CPU
Family	IBM 6x86
CPU part number	IBM26 6x86-2V2P150GE
Introduction	02/05/96
Manufacturing Date	14th week of 1996
Package	296-pin CPGA
Socket	Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	6x86
Codename	6x86
Manufacturing process	650 nm or 350 nm
Transistors	3000000
Instruction set	CISC
Frequency	120 MHz
Bus Speed	60 MHz
Multiplier	x2
L1 Cache	16 KB
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	17 Watt
Vcore	3.3 Volt

IBM 6x86 P166+

IBM26 6x86-2V2P166GE
Specification Details

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Type	Central processing unit / CPU
Family	IBM 6x86
CPU part number	IBM26 6x86-2V2P166GE
Introduction	02/05/96
Manufacturing Date	14th week of 1993
Package	296-pin CPGA
Socket	Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	6x86
Codename	6x86
Manufacturing process	650 nm or 350 nm
Transistors	3000000
Instruction set	CISC
Frequency	133 MHz
Bus Speed	66 MHz
Multiplier	x2
L1 Cache	16 KB
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	18 Watt
Vcore	3.3 Volt

IBM 6x86L PR200+

IBM26 6x86L-2VAP200GB
Specification Details

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Type	Central processing unit / CPU
Family	IBM 6x86
CPU part number	IBM26 6x86L-2VAP200GB
Introduction	February 1996
Manufacturing Date	?
Package	296-pin CPGA
Socket	Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	6x86
Codename	M1
Manufacturing process	350 nm?
Transistors	3000000
Frequency	150 MHz
Bus Speed	75 MHz
Multiplier	x2
L1 Cache	16 KB
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	14 Watt
Vcore	2.8 Volt

IBM 6x86MX

Another release of the 6x86, the 6x86MX, added MMX compatibility, introduced the EMMI instruction set, and quadrupled the primary cache size to 64 KB. Later revisions of this chip were renamed MII, to better compete with the Pentium II processor.

IBM 6x86MX PR166

IBM26x86MX-AVAPR166GB
Specification Details

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Type	Central processing unit / CPU
Family	IBM 6x86MX
CPU part number	IBM26x86MX-AVAPR166GB
Introduction	05/1997
Manufacturing Date	?
Package	296-pin CPGA
Socket	Socket 7
Dimensions	49.6 mm x 49.6 mm
Microarchitecture	6x86
Codename	M2
Manufacturing process	350 nm
Transistors	6500000
Frequency	133 MHz
Bus Speed	66 MHz
Multiplier	x2
L1 Cache	64 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	?
Vcore	2.9 Volt

IBM 6x86MX PR233

IBM26x86MX-CVAPR233GE
Specification Details

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Type	Central processing unit / CPU
Family	IBM 6x86MX
CPU part number	IBM26x86MX-CVAPR233GE
Introduction	05/30/1997
Manufacturing Date	?
Package	296-pin CPGA
Socket	Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	6x86
Codename	M2
Manufacturing process	350 nm
Transistors	6500000
Frequency	200 MHz
Bus Speed	66 MHz
Multiplier	x3
L1 Cache	64 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	13 Watt
Vcore	2.9 Volt

IBM 6x86MX PR300

CPU-Z:

IBM26x86MX-DVAPR300HF
Specification Details

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Type	Central processing unit / CPU
Family	IBM 6x86
CPU part number	IBM26x86MX-DVAPR300HF
Introduction	May 1998
Manufacturing Date	27th week of 1998
Package	296-pin FCCPGA
Socket	Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	6x86
Codename	6x86 MX
Manufacturing process	350 nm
Transistors	6500000
Instruction set	CISC
Frequency	233 MHz
Bus Speed	66 MHz
Multiplier	x3.5
L1 Cache	64 KB
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	?
Vcore	2.9 Volt

Unlisted models:

6x86(L): P90+, P100+, P120+, P133+
6x86MX: PR200, PR266, PR333

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