i5 750 @ 4GHz - 75°C max load OK?

jmp_78 · 22 Apr 2010 at 21:44

I have my new Core i5 750 @ 4.0 GHz running 100% load under Prime95, and cooled with a Zalman CNPS9900 NT.

Max temp of any of the cores is 75°C - I am led to believe this is within the safe limts as a max, but wanted some more thoughts.

At idle, the temp is between 30°C and 35°C.

Thanks all

jmp_78 · 22 Apr 2010 at 21:56

It's the SMALL test, the top one! I think that's the main CPU test right?

Ooooooo... crept up to 76°C on Core1!

jmp_78 · 22 Apr 2010 at 22:15

Thanks all, I also suspect that for 95% of the time the PC is on, my usage will keep the cores below 45°C anyway. By the way, voltages are set to AUTO, VCore is 1.344V.

So, now that I'm pretty much up and running... what kind of gaming FPS improvements should I see over the stock 2.66GHz? Have moved from a Dual-Core E5200 @ 3.7GHz, so at least a little I hope.

jmp_78 · 23 Apr 2010 at 13:14

Justintime said:
Try manual voltages, might run at a lot lower and produce a lot less heat.

Nice plan

As it's currently set to 1.344V (via AUTO in the BIOS), would you suggest I drop this manually to 1.300V and then re-run the stress testing? And then so on, and so forth?

jmp_78 · 24 Apr 2010 at 00:26

Settled on 1.312V - lowest voltage possible, whilst managing to maintain stability. Still, knocked my max load temps down by 5°C

Thanks for all of the help!

jmp_78 · 24 Apr 2010 at 15:19

Just an update really. Idle temps seem to be no higher than 35°C max, and having just done some gaming the max temp was 60°C.

Overall, very pleased