Friday, December 04, 2009

Bad Chip Test Results

After more testing I've come to the conclusion that I have a bad chip.

These are screenshots from my last test which I think is pretty conclusive. You can click on the images to see the full size.

This is the beginning of the test. Everything is normal here. The voltage and clock frequency are at normal values. This should be an easy test for the i5-750. I also included the Windows CPU Meter, Clock, and Calendar gadgets for extra verification. Note that the CPU meter agrees with OCCT showing both 100% CPU usage and 90% memory usage.

This period is the gap between test cycles. Note that CPU usage has dropped to 25%. Note that this occurs at 10 minutes and 16 seconds into the test.

The most important thing to note here is that the CPU clock has dropped to 1.2 Ghz but CPU activity is still 100%. This is a clear indication of thermal throttling. Note that this occurs at 12 minutes and 19 seconds into the test.

This is the OCCT graph. You can see the large drop at 10 minutes which corresponds to the second screenshot. The smaller dip at 12 minutes is the thermal throttling captured in the third screenshot. You can also see that thermal throttling had been occuring before the 10 minute period between tests.

This chip is definitely bad.

1 comment:

SuperFly03 said...

It's a wonder... Considering INtel literally benches each proc before selling it in order to set the VID you get a bad chip.

Wait... you are biased towards AMD.