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I5 3750k at 4.74ghz 61 degrees

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June 21, 2012 2:39:48 AM

This is my first time over clocking, I just built this system today. Using a ASUS p8z77 v-pro, intel i5 3570k, custom water loop. I am currently stress testing with a multiplier of 46 and BCLK Frequency of 103 running at 1.25 volts. Highest temp I have gotten on one core is 61 degrees.

Should I increase voltage and then increase Frequency or Multiplier? I would like to reach 4.8ghz just for SnG, I think this temp is pretty low from what I have been reading. What are you guys thoughts?

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June 21, 2012 2:56:49 AM

i wouldn't stop till your atleast hitting 70C, and i would keep at the multiplier
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June 21, 2012 3:03:57 AM

so continue to up the voltage and up the frequency?
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June 21, 2012 3:05:53 AM

yes, try not to go much above 70-80 degrees (Celsius) though
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June 21, 2012 3:10:05 AM

Just got a blue screen, to compensate should I increase voltage?
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June 21, 2012 3:20:36 AM

yep
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June 21, 2012 3:23:39 AM

Is there a max I should increase voltage to? From what I have read people say stay below 1.3v but im at 1.31. is it just based off temp?
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June 21, 2012 3:30:01 AM

ok right now stress testing with IntelBurnTest top temp is 75 C. 105.5 frequency, 1.34 voltage and 46 multiplier. 4.853 ghz. Seems to be doing alright
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June 21, 2012 3:34:33 AM

yeah, i wouldnt push it any further, nice overclock though :) 
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June 21, 2012 3:44:17 AM

a lot better than I expected. 3.4 all the way to 4.85 is a ton!
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June 21, 2012 4:06:10 AM

tawood said:
a lot better than I expected. 3.4 all the way to 4.85 is a ton!


The only thing I would recommend is just using a 48x multi and setting the BCLK back to 100Mhz. The system buses that are tied to the BCLK don't like being OC'd very much (especially the USB and SATA buses).

It can damage USB components and cause data corruption over time with drives on the SATA bus, so it's best to just leave the BCLK alone. It's not like you need that extra 50Mhz anyway...
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June 21, 2012 4:15:04 AM

Just upped the multiplier to 49, changed BCLK to 100mhz. so 4.9ghz OC. doing my burn test right now, actually have lower temps than I did at 4.85ghz. Should I go for 5.0ghz? change multiplier to 50x? Current temps are maxing at 72 Celsius
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June 21, 2012 4:19:52 AM

tawood said:
Just upped the multiplier to 49, changed BCLK to 100mhz. so 4.9ghz OC. doing my burn test right now, actually have lower temps than I did at 4.85ghz. Should I go for 5.0ghz? change multiplier to 50x? Current temps are maxing at 72 Celsius


Low 70's is about as high as I'm personally comfortable with, but a tad higher is OK. I suppose you can try 5.0 and see, I just wouldn't let it get any higher than 80C.
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June 21, 2012 4:21:51 AM

Meh ill just leave it at 4.9. That is plenty lol especially considering my old build (what im used to) was only 2.8ghz
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June 21, 2012 4:26:26 AM

Hell yeah it is! A 4.9Ghz 3570K is freakin' awesome, I must say. :) 
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June 21, 2012 10:57:46 AM

wow can i just say that is an AWESOMe overcock and i hope you hit 5 ghz
amd ade world record of 8.4ghz with their bulldozer and considering amds cpu's are substantialy slower even at the higher clock rate that is awesome.
is the speed your stating with turbo mode or without?
also maye you could add extra fans or somthing i wouldnt let it get above 70 personaly.
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June 21, 2012 1:28:04 PM

At 4.9 I was hitting temps of 81 Deg. Cel. after about 10min of IntelBurn. I changed it back to 4.85 and I am idle temps of 35-40deg Cel and Burn temps of 75-77. Is that alright?
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June 21, 2012 4:39:35 PM

tawood said:
At 4.9 I was hitting temps of 81 Deg. Cel. after about 10min of IntelBurn. I changed it back to 4.85 and I am idle temps of 35-40deg Cel and Burn temps of 75-77. Is that alright?


intel burn test creates huge ammounts of heat, unless your planning to fold, or prime95 all the time, i wouldnt be too worried about an 80C synthetic test

and bulldozer got up to 9GHz btw
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June 21, 2012 5:39:41 PM

Just as an FYI, Ivy Bridge has a lower Tcase than previous CPUs. The Intel Documentation lists it as 67.4°C.

Anyway, pretty impressive OC. Hopefully it lasts a while!
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June 21, 2012 6:14:15 PM

What is Tcase? lol
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June 21, 2012 6:41:30 PM

its the highest "optimal" temprature for your cpu :) 
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June 21, 2012 7:10:23 PM

oh lol should i bring the OC down some?
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June 21, 2012 7:15:42 PM

Depends how concerned you are about longevity. If you want to get 3-5 years out of it, yes definitely take it down. Chances are that extra speed isn't really boosting your performance much anyway other than in some limited functions, because it's already faster than everything else in your PC lol.
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