AMD 760MPX B2 stepping

AMD 760MPX B2 stepping

[Steve Wolfe]

   I have been having a devil of a time trying to get SMP to work with
stability on the new B2 stepping of the 760 MPX chipset (Tyan 2466N-4M
motherboard).  Has anyone fiddled with it, and if so, are there any known
bugs?  My gut feeling is that the BIOS included with the motherboard is
incredibly buggy, but I haven't been able to find any information to
confirm or contradict that.

steve

Re: AMD 760MPX B2 stepping

[Jason L Tibbitts III]

>>>>> "SW" == Steve Wolfe <sw@codon.com> writes:

SW> I have been having a devil of a time trying to get SMP to work
SW> with stability on the new B2 stepping of the 760 MPX chipset (Tyan
SW> 2466N-4M motherboard).  Has anyone fiddled with it, and if so, are
SW> there any known bugs?

Just to summarize my discussion with Steve today, I put together a
machine with one of these boards (Tyan Tiger MPX S2466N-4M) with
2xMP1900+ processors and 4x512MB PC2100 registered ECC DIMMs (Corsair
CM73SD512R-2100).  The machine runs fine under concurrent big CPU and
IO loads.  I don't think there's anything inherently wrong with this
board, although I do think these things run rather close to spec and
are sensitive to just about any oddity.

(I also have a bunch of the previous revision of Tyan MPX boards and
they're stable as well.  I never could get the early generation Tiger
MP boards to work at all.)

 - J<

Re: AMD 760MPX B2 stepping

[Nicolae P. Costescu]

Steve
Just put 3 of these together and they seem to work fine (Tyan 2466N-4M, 
2x1.6GHz Athlon MP processors - make sure you are using MP and not XP - 
Tyan won't certify the XP for SMP and a lot of people complain about 
stability with the XPs in an SMP config).

There is a catch - they only work with "single bank" dimms (64x4 for 512MB 
dimm). The vendor shipped me a mix of 64x4 and 32x8 512MB dimms, and the 
32x8's would not even POST. Tyan's web site indicates the board should work 
with the 32x8 as well (in fact they list the ATP/Samsung part # of the 
DIMMs I was sent, both 64x4 and 32x8). However, since I've tried 6 DIMMS 
and 3 motherboards, I feel confident in saying they are WRONG :)

Good luck.
Nick

At 03:44 PM 4/17/2002 -0600, Steve Wolfe wrote:

>    I have been having a devil of a time trying to get SMP to work with
>stability on the new B2 stepping of the 760 MPX chipset (Tyan 2466N-4M
>motherboard).  Has anyone fiddled with it, and if so, are there any known
>bugs?  My gut feeling is that the BIOS included with the motherboard is
>incredibly buggy, but I haven't been able to find any information to
>confirm or contradict that.
>
>steve
>
>
>-
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Stronghold Technologies
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