Extended overclock sessions versus temperatures

Extended overclock sessions versus temperatures

Since we have such high-end cooling in the house we definitely should have better tweakability on the processor.

As such I was wondering where I'd end up with a quick overclock session. So we popped in a Core i5 750 processor for a good reason, we had a peek at a selection of stages in overclocking and its respective temperatures, have a look at the following results please.

So as you can see, when we take this Core i5 processor up to 3800 MHz / 1.4v @ CPU we see that the temperatures are not at all an issue -- whatsoever. With the processor stressed we max out at less than 60 degrees C.

Mind you that we measure at a room temperature of 21 degrees C, in hot countries the ambient temperature obviously will also have a (negative) effect on overall cooling performance.

At this stage we then always wonder if we'd be successful in overclocking the processor above 4 GHz, and so we did. We took it successfully and stably to 4.2 GHz with 1.5 Volts pumped into the processor. The end result, with the processor cores stressed out 100%, is still stunning... a temperature that is still hovering at acceptable levels at give or take 70 degrees C, at 68 C / 154F.

A small note, 1.5V is extreme and not a requirement, we likely can achieve this overclock at 1.35~1.40V as well. We apply 1.5v because we really want to seek a threshold in cooling performance.

And here's what that looks like, all four cores running at 4200 MHz completely and utterly stressed by Prime 95. Not bad at all eh?