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NexGen Nx586
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The NexGen Nx586 Processor
The Nx586 is a 586 CPU with a RISC core and translates x86 instructions into efficient RISC code before execution. This processor also features an extra bus for L2 cache running at core speed - other 586 CPUs at that time accessed their L2 cache at external bus speed. It therefore does not run in common Socket 5 or 7 Pentium-boards but requires a special board design.
 
References: NexGen Nx586 at BYTE  Nx586 Product Brief (AMD)  NexGen: "Clean" Processor
NexGen Nx586-P90
NexGen Nx586-P90 Top Side
Nx586-XXXX-4.0-CPC-101
N39000HR AAA6583
N48013HR
NexGen Nx586-P90 Back Side
IBM
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Core Frequency:84 MHz
Board Frequency:42 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:3,500,000
Circuit Size:0.50
Voltage:4.0 V
Introduced:September 1994
L1 Cache:16+16 KB
Package Type:Ceramic
PGA-463
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NexGen Nx586-PF100-E/E
NexGen Nx586-PF100-E/E Top Side
NexGen
Manufactured by IBM
Nx586 processor
with RISC86 Microarchitecture
(C)(R) NexGen 94 95
PF100-E/E
Nx586-E A-2DCPC-202, 001
NXNX12004270
NexGen Nx586-PF100-E/E Back Side
In later Nx586s, a math coprocessor was included on-chip. Using IBM's multichip module (MCM) technology, NexGen combined the Nx586 and Nx587 die in a single package. The new device, which used the same pinout as its predecessor, was marketed as the Nx586-PF100 to distinguish it from the FPU-less Nx586-P100.
 
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Core Frequency:93 MHz
Board Frequency:46.5 MHz
Clock Multiplier:2.0
Data bus (ext.):64 Bit
Address bus:32 Bit
Transistors:4,200,000
Circuit Size:0.44
Voltage:4.0 V
Introduced:November 1995
L1 Cache:16+16 KB
Package Type:Ceramic
PGA-463
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