─ Area: ENG: 80XXX assembler programming ─────────────────────────────────────
  Msg#: 5996                                         Date: 10 Apr 96  23:47
  From: Herman Dullink                               Read: Yes    Replied: No 
    To: Ed Beroset                                   Mark:                     
  Subj: AMD 5x86 bugs?
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 AK> Are there any glaring bugs in AMD's 5x86?  I've got one in my 
 AK> laptop... she boots and says, "AMD 5x86-75 running at 133MHz".
 EB> If you're really running a 75MHz part at 133MHz, I'm not surprised
 EB> that it seems to malfunction with some regularity!  If not, I'd
 EB> suspect BIOS and then motherboard (e.g. jumper) problems, in that
 EB> order.   
The AMD 5x86-P75 is a 4x clocked Enhanced 486, which performs at least
as good as an Pentium 75 (P75 rating). While the Pentium has two integer
pipe-lines and an optimized FPU, the 5x86-P75 uses the 486 core with a higher
clock rate (4 x 33.3MHz). The integer part of the 5x86 performs as good as a
P100, it's the FPU performance that gives the 5x86 a 'P' rate of 75.
I know this cause I happen to have a 5x86-p75 running at 4 x 40MHz, and
outperform many Pentium systems except on heavy FP applications (Mathematica,
3D CAD). Not bad for a $100,- CPU, eh?

Herman

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