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Hyperthreading and temps?

post #1 of 5
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Hi Im just wondering with the HT Intel CPU's how much does hyperthreading lower temps, I ask this because quite a few people turn HT off when they overclock.

See when i get my M11x i may turn HT off, Because its most likely not gonna be used as such
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post #2 of 5
Hyper threading increases temps silly tongue.gif and it depends on the setup.
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post #3 of 5
I don't see any difference in my temps with HT on or off. Even if i am running 7 heavy usage threads. It is the same as if I am running my four cores heavily.

I ussually leave it off since I can get 200MHz more OC out my CPU with it off and since it only helps when I am running multiple virtual machines...why mot have a few more MHz?
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post #4 of 5
idk but with me, hyperthreading drastically lowers temps.
to put it in perspective.
4.00Ghz 24x167 ht on 1.312v 84c max
4.20Ghz 21x200 ht off 1.344v 79c max
notice its a 5 c drop with +200Mhz & +.032v
I'm sure itd be around 10c lower with same settings just ht off
post #5 of 5
This is common sense guys. HT = 1 virtual core per 1 physical core. You're making your physical cores do way more work by emulating the workload of an additional core in addition to it's own. That's gonna increase temps.
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