AMD K5

The K5 was AMD's first x86 processor to be developed entirely in-house. Introduced in March 1996, its primary competition was Intel's Pentium microprocessor. The K5 was an ambitious design, closer to a Pentium Pro than a Pentium regarding technical solutions and internal architecture. However, the final product was closer to the Pentium regarding performance, although faster clock for clock compared to the Pentium.

The K5 project represented an early chance for AMD to take technical leadership from Intel. But because it was late to market and did not meet performance expectations, the K5 never gained the acceptance among large computer manufacturers that the Am486 and AMD K6 enjoyed.

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AMD K5 SSA/5

The first "unfinished" K5 was codenamed SSA/5 which had bugs in branch-prediction and in the level 1 cache. Earlier units were sold as AMD 5k86.

AMD 5k86-P75

AMD-SSA/5-75ABR
Specification Details

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Type	CPU / Central processing unit
Family	AMD K5
CPU part number	AMD-SSA/5-75ABR
Introduction	03/27/1996
Manufacturing Date	20th week of 1996
Package	296-pin CPGA
Socket	Socket 5 Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	K5
Codename	5k86
Manufacturing process	350 nm
Transistors	4300000
Frequency	75 MHz
Bus Speed	50 MHz
Multiplier	x1.5
L1 Cache	16 KB instruction cache, 8 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	?
Vcore	3.5 Volt

AMD K5 PR100

CPU-Z:

CPU die picture:

AMD K5-PR100ABQ
Specification Details

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Type	Central processing unit / CPU
Family	AMD K5
CPU part number	AMD K5-PR100ABQ
Introduction	06/17/96
Manufacturing Date	30th week of 1996 34th week of 1996
Package	296-pin CPGA
Socket	Socket 5/7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	K5
Codename	SSA/5
Manufacturing process	350 nm
Transistors	4300000
Instruction set	CISC
Frequency	100 MHz
Bus Speed	66 MHz
Multiplier	x1.5
L1 Cache	16 KB instruction cache, 8 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	13 Watt
Vcore	3.52 Volt

5k86

The bug-free version of SSA/5, codenamed 5k86 was only sold as AMD K5.

AMD K5 PR120

AMD K5-PR120ABQ
Specification Details

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Type	CPU / Central processing unit
Family	AMD K5
CPU part number	AMD K5-PR120ABQ
Introduction	10/07/1996
Manufacturing Date	44th week of 1996
Package	296-pin CPGA
Socket	Socket 5 Socket 7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	K5
Codename	5k86
Manufacturing process	350 nm
Transistors	4300000
Frequency	90 MHz
Bus Speed	60 MHz
Multiplier	x2
L1 Cache	16 KB instruction cache, 8 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	10 Watt
Vcore	3.5 Volt

AMD K5 PR133

CPU-Z:

AMD K5-PR133ABR
Specification Details

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Type	Central processing unit / CPU
Family	AMD K5
CPU part number	AMD K5-PR133ABR
Introduction	10/07/96
Manufacturing Date	48th week of 1996
Package	296-pin CPGA
Socket	Socket 5/7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	K5
Codename	5k86
Manufacturing process	350 nm
Transistors	4300000
Instruction set	CISC
Frequency	100 MHz
Bus Speed	66 MHz
Multiplier	x2.5
L1 Cache	16 KB instruction cache, 8 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	11 Watt
Vcore	3.52 Volt

AMD K5 PR150

CPU-Z:

CPU die:

AMD K5-PR150ABR
Specification Details

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Type	Central processing unit / CPU
Family	AMD K5
CPU part number	AMD K5-PR150ABR
Introduction	10/07/96
Manufacturing Date	6th week of 1997
Package	296-pin CPGA
Socket	Socket 5/7
Dimensions	49,6 mm x 49,6 mm
Microarchitecture	K5
Codename	5k86
Manufacturing process	350 nm
Transistors	4300000
Instruction set	CISC
Frequency	116,67 MHz
Bus Speed	66,67 MHz
Multiplier	x1,75
L1 Cache	16 KB instruction cache, 8 KB data cache
Data width	32 Bit
Floating Point Unit (FPU)	Integrated
Power consumption	?
Vcore	3.52 Volt

Unlisted models:

SSA/5: P90, P100, PR75, PR90
5k86: PR120, PR166, PR200

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