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 it's respective temperatures, have a look at the following results please.

Overclock results with one fan

Overclock results with two fans

Overclock results with three fans

So as you can see, multiple fans does matter .. but not a lot. We'll remain focused on a solution with one fan, as that's what most of you guys will use.

With one fan taken into consideration, when we take this Core i5 processor up towards 3800 MHz / 1.4v @ CPU we see that the temperatures are not at all an issue -- whatsoever. With the processors 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 stable towards 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 somewhat 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 wan to seek a threshold in cooling performance and to show you what to expect when you try and cram in 1.5v in combo with this cooler.

And here's what that looks like, all four cores running at 4200 MHz completely and utterly stressed by Prime 95 with the processor ay 1.5v