A7V600 problems (not otherwise seen here?)

[Alan Garrett]

Hi All,

I have a A7V600 which I am having problems getting stable.(2800+, best I can
do is 1600). Seen all the previous A7V600 notes here over the last 3 months
but haven't seen any comments on the following:

BIOS:
The 4 fixed settings for cpu speed keep multipler at 12.5 and vary the FSB
I want to keep the FSB and change the multipler, which the bios allows me to
do.
However the AMD diagnostics prog from the AMD web site which gives you a
processor speed shows NO CHANGE by varying the multipler !

What am I missing ?

Also I have a 20C higher cpu temp using the bios than using probe, an
external thermometer would favour probe as being right, but.....

Alan

 

[David]

You are missing an UNLOCKED CPU.
So that would be 12.5x 166(333) = 2075 that 1600 would be around 9.5x 166
or 12.5x 133(266). In any case set the FSB to 166(333). There is noway you
can get 12.5x 200(400) as that would be 2.5g
dave

 

[Alan Garrett]

Further thoughts,

Its most stable when its been on for 3 or 4 hours.
increasing the core voltage from 1.65 to 1.7 makes it much worse.
It runs memtest86 and other stress progs without error.
When it dies it just stops.

Alan

 

[Alan Garrett]

Thanks David,

I did do some browsing and relaised that eventually, as its 333FSB selecting
166 makes sense, but the BIOS default is 12.5 * 166 = 2000ish and it still
is unreliable.

changed the processor and the memory no diference.

Is there a limit on the clock multiplier for a 2800+


Rgds,

Alan

 

[David]

Yes. It would seem that AMD has superlocked there processors after week 39
of last year (0339). Prior to that the Bartons (at least) were unlocked.
Various means existed to unlock the cpu's but with the 'super lock' most
fail to work. Heck the fast ones are cheep by old standards..

I am using an A7V600 here and the only problem I have is the Power Fan speed
is not reported to the OS.. Just to CMOS!!
My BIOS is 1007beta3.
Dave