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Overclocked 2500k @ 4.8 Ghz - What are safe 24/7 Temps? - Page 3

post #21 of 35
Thread Starter 
Quote:
Originally Posted by gsa700 View Post

Yep, IBT will typically push your cpu up to 10c higher in max temp than Prime95 will.
2500k at 4.8 should get about 120-125 Gflops in IBT.

Haha I'm only getting 69 Gflops, any reason why it would be that low? Also, my temps hover around 70-72 with spikes to 74 C. Is this acceptable?
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post #22 of 35
Quote:
Originally Posted by HydrogenHuman View Post

Haha I'm only getting 69 Gflops, any reason why it would be that low? Also, my temps hover around 70-72 with spikes to 74 C. Is this acceptable?

If your only getting 69 Gflops, you most likely:

a. have an old version of IBT
b. don't have windows 7 sp1 installed

or

c. both.

74c is good for IBT, like I said it adds around 10c above Prime and/or folding.

I'm happy with mine if I get less than 80c with IBT and that translates to around a 70c max under 24/7 folding.
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post #23 of 35
Thread Starter 
Quote:
Originally Posted by gsa700 View Post

If your only getting 69 Gflops, you most likely:
a. have an old version of IBT
b. don't have windows 7 sp1 installed
or
c. both.
74c is good for IBT, like I said it adds around 10c above Prime and/or folding.
I'm happy with mine if I get less than 80c with IBT and that translates to around a 70c max under 24/7 folding.

I have IBT v2.53 it seemed like that was the latest. I couldn't fine the website where IBT is developed.

UPDATE: Just realized I don't have SP1 completely installed. Downloading it now.
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post #24 of 35
Quote:
Originally Posted by HydrogenHuman View Post

I have IBT v2.53 it seemed like that was the latest. I couldn't fine the website where IBT is developed.
UPDATE: Just realized I don't have SP1 completely installed. Downloading it now.

Yeah, service pack 1 added the support for AVX to windows and that will get you the big Gflops.

thumb.gif
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post #25 of 35
Thread Starter 
Well, I cringed when I saw it go up to 80C maximum, but I managed to pass the Intel Burn Test with 4.6 Ghz with an offset of +0.005. Do these temperatures seem too high? I'm using a Noctua NH-D14 air cooler. Here is a reading of the test results:

295
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post #26 of 35
For IBT those temps are fine, you will always see them shoot way up when you run IBT. It is a completely unrealistic load for anything from day to day. If it's under 80~85 for IBT you should be sweet! thumb.gif
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post #27 of 35
Quote:
Originally Posted by HydrogenHuman View Post

Well, I cringed when I saw it go up to 80C maximum, but I managed to pass the Intel Burn Test with 4.6 Ghz with an offset of +0.005. Do these temperatures seem too high? I'm using a Noctua NH-D14 air cooler. Here is a reading of the test results:
295

That looks good.
Quote:
Originally Posted by DirektEffekt View Post

For IBT those temps are fine, you will always see them shoot way up when you run IBT. It is a completely unrealistic load for anything from day to day. If it's under 80~85 for IBT you should be sweet! thumb.gif

I agree with this. Your day to day temps will be much lower.
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post #28 of 35
You're basically jerking off with IBT (Linpack). 12hrs Prime blend does not let through processors that fail under ~30mins Linpack.

And the Linpack power draw is meaningless. It does not stress your chip any more then Prime, it simply draws more voltage until the heat knocks out your OC (heat that your software/games/OS will never make on it's own).

Even overnight runs of Prime95 that peak at 75C mean very little if you're wondering about safe temps for 24/7 use. Here's an idea: use your computer for a week without rebooting, check peak temp and there you will have your 24/7 temp to ask about.
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post #29 of 35
Quote:
Originally Posted by samwiches View Post

You're basically jerking off with IBT (Linpack). 12hrs Prime blend does not let through processors that fail under ~30mins Linpack.
And the Linpack power draw is meaningless. It does not stress your chip any more then Prime, it simply draws more voltage until the heat knocks out your OC (heat that your software/games/OS will never make on it's own).
Even overnight runs of Prime95 that peak at 75C mean very little if you're wondering about safe temps for 24/7 use. Here's an idea: use your computer for a week without rebooting, check peak temp and there you will have your 24/7 temp to ask about.

While that is good advice, I've yet to have an OC pass IBT and then fail anything else.
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post #30 of 35
Quote:
Originally Posted by gsa700 View Post

Quote:
Originally Posted by samwiches View Post

You're basically jerking off with IBT (Linpack). 12hrs Prime blend does not let through processors that fail under ~30mins Linpack.
And the Linpack power draw is meaningless. It does not stress your chip any more then Prime, it simply draws more voltage until the heat knocks out your OC (heat that your software/games/OS will never make on it's own).
Even overnight runs of Prime95 that peak at 75C mean very little if you're wondering about safe temps for 24/7 use. Here's an idea: use your computer for a week without rebooting, check peak temp and there you will have your 24/7 temp to ask about.

While that is good advice, I've yet to have an OC pass IBT and then fail anything else.

Yes, funny enough I've seen totally opposite behavior---never have failed Linpack with a reasonable OC! Not once. Only the crazy 1.50v+ runs @ 5200+ (for sh**s really).

But I think the next Prime95 with AVX support may strike a good balance.
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