Well an hour or two before the chips died, I was looking for a temperature at which the chip starts to become unstable.Originally Posted by ZL1Killa
I mounted an Zalman 7000 fan and ran em at lowest possible speed with the 9500 oced to 2,65GHz at 1,375-1,4V
This is a screeny of what I had running as SG reported 100° I powered the machine off.
Look at these different temperature readings.
SG 100° CPU-Temp 53°, Core-Temp 85°.
On the M3A Cpu temp was allways 5-10° above core-temp. Had not touched the temperature offset in the bios.
I'm not sure what temp the cpu run at I guess it's 75°-85°.
Afterwards I mounted the BigTyphoon again and played alittle with memory timings. System behaved normal after that temperature test and the load temps SG reported where ~50°. Tried a few settings with 1T and increased mem voltage above 2,2V.
Then I wanted to try an HD2600XT together with an HD2400pro. The system froze during Driver Installation and rebooted at the gfx-driver load stage during windows start.
Replaced the cpu with an BE2400 and I got the same problem. Used an other hd whom booted fine. So I switched back to the 9500 and now that thing whould no longer boot. Mobo hung at C1 stage. I tried the cpu in an M2A-VM and an M3A mobo and it did not boot in those two also.
Funny thing was that it also did not boot with the BE2400 now, tried it with an X2-3600 and that worked. After that the BE2400 worked.
I tried different types of cmos erasing and flashed different bios versions just to make sure i'm not affected of the C1 issue here.
I ordered an 9600BE and that thing booted fine, only thing i noticed was that it ran at 1,01V, can be that was a leftover setting from the 9500.
KTE mentioned once that he could get an chip work again under very cold ambient, I placed my 9500 in the fridge, but that did not help eighter.
Can be three things that killed the chip.
1. That temperature experiment (but the system worked without problems afterwards for two hours).
2. Too much voltage on the ram (but those chips died with low NB and high RAM voltage and I had 1,3V on the core-NB).
3. Too much volts for the cpu. I ran it at up to 1,5V in the M2A-VM for weeks without problems and long term degradation. But cpu-z reported ~1,4V at those settings. On the sapphire I tried 1,425V at 2,7GHz but that was not stable so i switched back to 2,6GHZ at 1,375V-1,38V. CPU-Z reported voltages where pretty close to my bios settings +-0,01V
Still curious about those default voltages have em all at the lowest possible now (1,2/1,12/1,12/1,03V) and it's still prime95 stable.
EDIT: First day I did not freeze my machine and prime did not fail one time, damn I must be paranoid. Trying to find the minimum stable vcore/vcorenb atm, it's priming fine at 1,1625V/1,1625V atm. Is there a bios version out ther with cpu vid/nb vid options in addition to vcore/vcorenb? Seems those stay at 1,25V. At least that's what AMD Power Monitor reports.
EDIT EDIT: Yeah, finaly prime95 failed at 1,15/1,15V
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