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HT vs clock?

post #1 of 11
Thread Starter 
Hi all,

I am starting my journey toward overclock so I apologize for the noobish question in advance >.>
Using Prime I've noticed a sensible decrease in computing time when hyperthreading is enabled; now, since I've read here that in order to reach very high levels of overclocking it is a common procedure to disable HT, I would like to know if brute computational power is affected negatively by this.

cheers
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post #2 of 11
Well,

Yes and no, the only reason you'd use HT is if you're running with multithreaded applications. Folding, server applications and video rendering apps are the most common. Whilst HT doesn't have a direct effect on overclocks it does increase temps and you'll probably need more voltage. That's pretty much the main reason why people disable it.

However, if you're going to disable HT, you should have just gone with an i5 2500k

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post #3 of 11
Depends completely on what you are doing.

If you aren't doing anything that would benefit from HT (by using more threads than you have physical cores) go ahead and turn it off.

Most programs, or multi-tasking scenarios, that do benefit from HT are going to benefit more from HT than from a few hundred MHz more with HT disabled.
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post #4 of 11
What the other said, if you are going for multithreading performance the amount of MHz required to exceed what HT provides isn't within the realm of what you'd gain with HT off.
    
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post #5 of 11
I would keep HT on. Programs will use it in the future and when you go to turn it on for these applications it will mess up your OC. Just OC with HT now and be done with it.
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post #6 of 11
Might as well keep it on. You paid the extra $ for it. You will overclock the same, but it may need a extra .2v or more to get the same overclock with HT.
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post #7 of 11
Thread Starter 
sorry, my question generated a bit of confusion: I didn't want to disable HT, were only wondering about why disabling it allowed higher overclocks
I mostly do video editing, HT is a true blessing for me

thanks for all answers
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post #8 of 11
THe reason it gives you a higher overclock is you don't need as much Vcore which reduces temps which allows for a higher OC.

Simples
post #9 of 11
HT is only useful for highly threaded apps, It is really pointless if you are gaming, Which you will gain 0% performance gain, Only higher temps.

It matters what you do though, If you are using highly threaded applications, Then by all means leave it on for sure,
But, If you are gaming, Turn it off, Really pointless, You only gain higher temps with it on.

Quote:
Originally Posted by compuman145 View Post
THe reason it gives you a higher overclock is you don't need as much Vcore which reduces temps which allows for a higher OC.

Simples
And this.
You will get lower temps, Which, Most of the time will allow higher clocks.
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post #10 of 11
Quote:
Originally Posted by AMDrocks View Post
HT is only useful for highly threaded apps, It is really pointless if you are gaming, Which you will gain 0% performance gain, Only higher temps.

It matters what you do though, If you are using highly threaded applications, Then by all means leave it on for sure,
But, If you are gaming, Turn it off, Really pointless, You only gain higher temps with it on.


And this.
You will get lower temps, Which, Most of the time will allow higher clocks.
ok, deep breath for this one.

Firstly it's multithreaded apps not "highly" threaded apps, has his processor smoked a load of weed?

Secondly, considering that he's already said that he's doing video rendering, it's completely worthwhile him turning it on and leaving it there.

The higher temps are negligable with a good cooler. 5c doesn't make a massive difference.

As for gaming that's correct, it's pointless, but if that's the case why did you get an i7 in the first place if you're only gaming?

Comps
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