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Is my 2600K OC ok? Overclocking newbie. - Page 2

post #11 of 22
Quote:
Originally Posted by hockeyfighter09 View Post
Would it be worth it to try for 4.7? I started out at 4.8 last night and got it prime testing but failed about 10-15 mins in. I had it about 1.415 volts, which is too much for me, plus the temps got to like 82-83C which had me sweating.

How much of a performance boost would I see going from 4.6 to 4.7? Would it even make a noticeable difference in my CPU heavy tasks such as folding and video encoding?
If you're going to be folding then you're going to want to run Prime95 for 20+ hours to ensure the data you're sending back isn't useless. Before I got this baby stable it could pass 100 runs of IBT without problem but would always fail 8 hours into Prime95.
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post #12 of 22
Thread Starter 
Quote:
Originally Posted by c0ld View Post
Why the huge jump on voltage from 4.6Hz to 4.7GHz?

Since you got 1.304V @ 4.6GHz
I haven't test out 4.7 yet. That voltage was when I was testing 4.8GHz early this morning before I settled on 4.6 to test. Do you think I could hit 4.8 stable with a little over 1.300 volt?! That would be insane!
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post #13 of 22
Quote:
Originally Posted by hockeyfighter09 View Post
I haven't test out 4.7 yet. That voltage was when I was testing 4.8GHz early this morning before I settled on 4.6 to test. Do you think I could hit 4.8 stable with a little over 1.300 volt?! That would be insane!
Sadly, it doesn't really work that way. My chip is at 4.5Ghz with 1.296v. I can get to 4.6Ghz with a tiny bit more but the jump to 4.7Ghz is pretty big. You may have gotten lucky and gotten an amazing chip but most hit a plateau that require a bit more voltage to get over.
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post #14 of 22
Above 4.6 is mostly for benching. Since you don't see much of a gain for everyday use.
It actually gives you more problems due to more voltage and heat.
Especially if your room/ambient temp are high, it'll just give you the hottest room on the block....
But by all means, this is Overclock.net.... so no one will stop you to go higher, though..

Oh also, higher you go the clock, more and more it needs vcore.
Thus more heat = more problems
Edited by Tunagoblin - 7/30/11 at 1:44pm
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post #15 of 22
Thread Starter 
Quote:
Originally Posted by nezzarix View Post
Sadly, it doesn't really work that way. My chip is at 4.5Ghz with 1.296v. I can get to 4.6Ghz with a tiny bit more but the jump to 4.7Ghz is pretty big. You may have gotten lucky and gotten an amazing chip but most hit a plateau that require a bit more voltage to get over.
Quote:
Originally Posted by Tunagoblin View Post
Above 4.6 is mostly for benching. Since you don't see much of a gain for everyday use.
It actually gives you more problems due to more voltage and heat.
Especially if your room/ambient temp are high, it'll just give you the hottest room on the block....
But by all means, this is Overclock.net.... so no one will stop you to go higher, though..

Oh also, higher you go the clock, more and more it needs vcore.
Thus more heat = more problems
Yeah, It was looking last night that I would have to go WELL above 1.4v for a stable 4.8GHz and the temps were just frightening me. I think I am just gonna stay at 4.6 and try to get that stable.

Also what is the best stresstest program? Is it Prim95? Nezzarix mentioned he could pass the intel burn test no problem after 100 runs but failed prime in 8 hours. Is stress testing on Prime 95 good enough to ensure stability?
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post #16 of 22
Quote:
Originally Posted by hockeyfighter09 View Post
Yeah, It was looking last night that I would have to go WELL above 1.4v for a stable 4.8GHz and the temps were just frightening me. I think I am just gonna stay at 4.6 and try to get that stable.

Also what is the best stresstest program? Is it Prim95? Nezzarix mentioned he could pass the intel burn test no problem after 100 runs but failed prime in 8 hours. Is stress testing on Prime 95 good enough to ensure stability?
They both test for stability but go about it a different way. I can have Prime95 at 100% CPU usage and still play Team Fortress 2 without any slowdowns at all. On the other hand, if I am running IBT then everything slows down to a snail's pace. IBT is much more intensive than Prime95 and (at least on my system) draws more power. If you can pass 100 runs of IBT and at least 5-6 hours of Prime95 then your system is unlikely to crash on you. My old system could only get through 8 hours of Prime95 and I can't remember the last time it crashed.

In the end, it's up to you. Personally, I run Prime95 for 12 hours just to ensure that my system doesn't crash in the middle of a WoW raid or something, even if the chances are minuscule.

EDIT: Also, if you Fold, please make sure you can run Prime95 for at least 16 hours. Getting point for your team is nice but what's the point if you're sending Stanford corrupted and unusable data?
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post #17 of 22
Your temps look high for 1.31V with a Noctua NH-D14. With my H60 1.36V 4.6ghz, I was topping out at 74. NH-D14 is supposed to cool better than H60. I have a small case with mediocre circulation and hot ambients (80F+).
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post #18 of 22
Quote:
Originally Posted by hockeyfighter09 View Post
Is there any way to throttle down the volts when the CPU is idle? My motherboard is an ASUS P8Z68-V Pro. Thanks!
Set the CPU voltage to offset mode, then the voltage will lower at idle. You may need to mess around with the +/- vcore because I believe it sets it dynamically based on multiplier. Just boot with offset at +0, see what it is under load, and then go from there.
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post #19 of 22
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post #20 of 22
Thread Starter 
Quote:
Originally Posted by ocococ View Post
Your temps look high for 1.31V with a Noctua NH-D14. With my H60 1.36V 4.6ghz, I was topping out at 74. NH-D14 is supposed to cool better than H60. I have a small case with mediocre circulation and hot ambients (80F+).
Yeah, I think it is because my room is so damn hot all the time. Plus I really don't want to take off the heatsink and reapply the thermal paste and reset it. The NH-D14 is a ***** to mount and I am lazy Another thing I forgot to mention is I am using the stock fans that came with my case, which is only 3. One front intake, one side intake and one back exhaust. I am sure if I invested in some better fans my temps would drop even lower. Right now my temps seem to be hovering around 68-72 depending on the core.

Quote:
Originally Posted by Dopamin3 View Post
Set the CPU voltage to offset mode, then the voltage will lower at idle. You may need to mess around with the +/- vcore because I believe it sets it dynamically based on multiplier. Just boot with offset at +0, see what it is under load, and then go from there.
Thanks for the tip! +Rep for you! How will I know which way to go? If +0 doesn't work would I have to go -1 or +1 for more testing?
Edited by hockeyfighter09 - 7/30/11 at 2:33pm
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