First post, by shamino
- Rank
- l33t
The system in question is on an ABit AV8 motherboard. Socket 939, VIA K8T800Pro chipset. The CPU is an Athlon64 3500+.
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This is a "Winchester" D0 core stepping.
I left it overnight running memtest86. Today I found it powered off. I know it has been running hot before, so I suspect it could have overheated. At this point, the board was still able to start back up, so I went into the BIOS and checked the options. It was configured to power off at 85C.
Now, after more hours of sitting, I can't get the board to finish POST anymore. It goes through a few POST codes, but it doesn't display video. I tried reseating everything (including the CPU) but no luck. I tried measuring Vcore, and unless I was measuring something wrong, I think it was sitting between 0.20 - 0.30v. Obviously much too low, and it was erratic in that range.
This makes me worry that the motherboard VRM is straining under a serious overload, or is already ruined. Perhaps the CPU is partially shorted.
Has anyone had experience with overheating any type of K8 CPU? How hot can they get before they are permanently damaged? Would 85C have potentially killed the chip? I'm sure that's hotter than AMD spec, but I'm wondering if anyone has real world experience with whether 85C will actually kill them. I don't have any other CPUs to try.