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Worthwhile turning off hyperthreading for higher clock speed

Forum Overclocking : CPUs - Worthwhile turning off hyperthreading for higher clock speed

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ibewho   09-22-2009 at 09:47:35 PM

Is it worth disabling hyperthreading in my i7 system to lower temps and gain a higher clock speed? Currently i'm running at 3.6 ghz on my 920 chip and I can't go higher without my temps reading over 75c in realtemp.

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flyin15sec   09-23-2009 at 12:48:18 AM

Depends on what you do with your i7 920. If it's just gaming, I would turn off HT and clock higher. if you do encodeing and cpu intensive apps, keep HT on and just run it at 3.6ghz.

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CompuTronix   09-23-2009 at 05:34:36 AM

Disabling HT will allow an additional ~ 200 Mhz at the same Vcore with a decrease in temperatures of up to ~ 12c.

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Message edited by CompuTronix on 09-23-2009 at 05:39:04 AM
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Lucuis   09-23-2009 at 10:14:38 AM

CompuTronix wrote :

Disabling HT will allow an additional ~ 200 Mhz at the same Vcore with a decrease in temperatures of up to ~ 12c.



That's pretty significant, i'd do it. Keep in mind i do a lot of gaming, not as much multi-core intensive programs. But if you can drop up to 12c off your temps you can up the voltages a but more for some pretty good mhz gains.

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 Reply to Lucuis
ibewho   09-23-2009 at 05:37:07 PM

is that how you guys are reaching 4.0 ghz on air? I don't seem to be able to get that high on my setup and i'm using the noctua cpu fan which is suppose to be rated decent.

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flyin15sec   09-23-2009 at 05:43:04 PM

I need 1.4v to get 4ghz on my i7 920 C0, with HT off. Not all chips overclock the same. I really boils down to how comfortable you are with voltages and temps, to achieve your desired goal.

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CompuTronix   09-24-2009 at 12:59:10 AM

flyin15sec wrote :

It really boils down to how comfortable you are with voltages and temps, to achieve your desired goal.


As long as they undersdtand Intel's voltage and thermal specifications. Shall I go over them again?


Message edited by CompuTronix on 09-24-2009 at 01:29:08 AM
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leo2kp   09-24-2009 at 02:19:10 PM

Some benchmarks show that HT can actually hinder gaming performance. If you are almost exclusively gaming, you would be even more to your benefit to turn off HT and increase the overclock, or even leave it at its current speed to lower temps slightly. Either way you could increase gaming performance.

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