Replies to post #56080 on Advanced Micro Devices Inc (AMD)

[dacaw]

Throttling?

If its o/c and running lots of SSE code it may well be thermal throttling that causing the issue.

If its malfunctioning because its being run so far out of spec I would expect a blue screen rather than just slowing.

Has he blown out the chip fans recently?

However in that famous Stanford talk the Intel engineer did allude to unexplained states in the P4 where it would just go 000s of cycles without doing anything useful and the designers did not know why.

There may be some (confidential) Intel notes on specific combinations of instructions that can cause recovery logic to set in.