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E8400 temperature increase with small OC

Forum Overclocking : CPUs - E8400 temperature increase with small OC

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gsd   12-31-2008 at 03:29:06 AM

Hi all.

I have an E8400 CPU (E0 stepping) with a Thermalright Ultra 120A CPU cooler and when I first got the CPU the temps were reading 34C idle and never exceeded 46C full load.
I just overclocked the E8400 to 3.6Ghz at stock voltages and ran IntelBurnTest and the temps have shot up by 11C under load! Surely it shouldn't increase by that much? I have not increased the voltages.

Temps are currently reading 63C in RealTemp (they were 46C @ 3.0Ghz).

I'm not very happy with those temperatures.

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gsd   12-31-2008 at 03:35:48 AM
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I just ran Prime95 and it never exceeds ~49C, which is more like what I was expecting. I think it's only IntelBurnTest that causes those huge temp increases - what a crazy stress program!

Reply to gsd
V3NOM   12-31-2008 at 04:24:00 AM
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ya, prime 95 doesnt represent real world values, and intelburntest is just ridiculously insanely USELESS. folding@home, running a virus scan + some other multitask or running a game for a bit will give you accurate real world temps, but unfortunately won't stress as much as prime95 or orthos :(

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col-p-todd   12-31-2008 at 04:44:12 AM
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obviously the temp will increase if you oc a cpu even if there is no voltage increase. ocing a cpu will make it faster, consume more power a generate more heat. those temps look correct to me after an oc with air cooling.

maybe somebody who also has an oc'd E8400 can share their temps with you.

Reply to col-p-todd
V3NOM   12-31-2008 at 05:31:43 AM
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the prime 95's look okay to me, forget and uninstall intelburntest :D

Reply to V3NOM
zeroyb   01-01-2009 at 10:54:58 PM
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I have my E8400 running at 3.4Ghz (8.5 x 400) with S1283. It was a while ago, so I don't remember the details. But I didn't go for 3.6Ghz because for me to up 0.2Ghz, I had to raise voltages a bit and temps when up a lot too. I guess mine is not as great of an OCer like other people's.

Anyway, with 3.4Ghz, my temps are (using RealTemp) 40 at idle and 53 at load. But if I remember correctly, I think mine was around low 60's at load when I OCed to 3.6Ghz also.

Reply to zeroyb
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