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i7 930 using 2 cores only, additional overclock possible?

M

metallicaband

Limp Gawd
Joined
Nov 3, 2007
Messages
489
Hi all,

I'm new to overclocking in general and for some reason I couldn't find much info about this subject when searching through google, thought more people would be interested in doing that since there are still some applications that use 2 cores only.

Anyway, my CPU is overclocked at the moment to 4Ghz with HT on @ 1.288 vcore (I think I can lower it a bit more, didn't tweak that much). If wanted to use 2 cores only, is it possible to get significantly higher overclocks with similar voltage? or will it still be the same?
 
If you actually disable the other cores through the BIOS, then yes you can get more headroom. As for it being significantly more, I wouldn't think that it'd be more than 300-500 Mhz.

The trick would be to find which cores can take the higher speed, as every core in the CPU has different limits.
 
Games are becoming more and more quad-core and multi-core orientated than ever before. Losing half your cores to have your remaining cores run 20% faster(IE 2.8 ghz > 3.1ghz) just doesn't seem worth it with the way games are going. There'd be a select few games were you'd see an improvement but your better off using all 4 cores these days. Especially if you do anything besides gaming like encoding dvds from xvids, etc.

Like the poster above said though, you likely won't be seeing much more than 0.2-0.3Ghz
 
WBurchnall said:
Games are becoming more and more quad-core and multi-core orientated than ever before. Losing half your cores to have your remaining cores run 20% faster(IE 2.8 ghz > 3.1ghz) just doesn't seem worth it with the way games are going. There'd be a select few games were you'd see an improvement but your better off using all 4 cores these days. Especially if you do anything besides gaming like encoding dvds from xvids, etc.

Like the poster above said though, you likely won't be seeing much more than 0.2-0.3Ghz
Click to expand...

Your argument is not yet relevant, as there aren't many games out there that can take advantage of more than two CPU's. I would say maybe about 5-10% of current games are multi-threaded. So for most games, there is a benefit to running only two cores 20% faster as you said, and it's not just "a few select games." Yes, multi-threaded gaming is the way of the future, but that future is not today, and not likely to be this year. It's much more likely to be in the next ~2-3 years. Now, if he was using applications that actually used multiple cores, I doubt he would be asking this question.

As for my advice, disable hyperthreading. You'll get more headroom than you would get if you had hyperthreading on while disabling cores.
 
Thanks for replying all, I needed 2 highly overclocked cores to bench something and actually use it if necessary, didn't want to use it for 24/7 though as that would make my quad processor a waste :p.

IIRC in the BIOS I just have the option of using 1 or 2 cores, not selecting the cores myself, which is a shame if it's true because 2 of my cores always run 5-6 degrees cooler than the other two. Gonna have to mess around and see what I'll get.
 
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