Overclocking my i7 4790k

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Stanislav Rago

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Nov 18, 2014
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Hello guys. Recently I've successfully overclocked my i7 4790 @4700 mhz with voltage 1.325. So I was wondering if this voltage is safe with my nzxt x62 kraken with temps at max load (75 - 77 C). I have mixed feelings because I've seen threads that people do not recommend going over 1.3v for 22 nm architecture.

My question is if I'm good or not with this settings.

P.S I don't know why but when I set vcore @ 1.325 my msi gaming 5 mobo automatically adds lie 0.10 more so Its actually like 1.335.

I should also add my ambient temp is hot at (28 c)

Kind regards
 
Solution
10tacle
Yes that is fine albeit a little higher voltage than other 4790K chip owner average at 4.7GHz. Read this guide for more temp margin info: http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

For comparison, I tested my i5 4690K chip to 4.7GHz with 1.30v and temps never got above 65C with a Noctua NH-D14 in a room that was a cool 15C/58F. In normal ambient room temp of 25C/77F, temps raised to about 72C. My case is a very high airflow Antec Nine Hundred so that makes a difference there for air cooling as well compared to your AIO closed loop Kraken.

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Stanislav Rago

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Nov 18, 2014
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So here I put screen-shot of my situation: http://prntscr.com/jljkt8.

As you can see vcore goes up to 1.341 even when i set it fixed @ 1.325. I guess mobo provides some extra juice when needed. Question stays the same if I'm good like this for everyday use.
 
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10tacle

10tacle

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Dec 6, 2008
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Yes that is fine albeit a little higher voltage than other 4790K chip owner average at 4.7GHz. Read this guide for more temp margin info: http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

For comparison, I tested my i5 4690K chip to 4.7GHz with 1.30v and temps never got above 65C with a Noctua NH-D14 in a room that was a cool 15C/58F. In normal ambient room temp of 25C/77F, temps raised to about 72C. My case is a very high airflow Antec Nine Hundred so that makes a difference there for air cooling as well compared to your AIO closed loop Kraken.

 
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Solution
10tacle

10tacle

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Also I have my Haswell build on two different boot BIOS settings (ASUS Z97-AR). One overclocked, the other stock. I don't find the need to overclock it when gaming as one running a 1440p monitor where the load is mostly put on the GPU. However, if I'm video rendering, I crank it up and there's a noticeable drop in rendering time.

Also FYI CPUID is notorious for not being accurate on some systems and conflicting with the motherboard temp sensors. Get a second opinion with HWiNFO64.
 
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The Paladin

The Paladin

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you should lock it at 1.30v going over is going to reduce significantly the life of your cpu.

look at HWINFO sensor mode, and temp on your cpu while playing,. probably has 1 core higher than others, then go back to bios, set other cpu at x47 and that one that is 5 degrees hotter or more to x46, should have it run all smoothly together afterwards
you can run the 4790K safely at 80c at those settings.

 
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10tacle

10tacle

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I would tone it down to 4.5GHz long term. You will not notice that 200MHz difference in real world applications between gaming and productivity. Now you will notice the difference from 4.0GHz stock speed on all four cores to 4.5GHz.

28C/83F is a little toasty. Looking at your four core temps, they are pretty consistent do you have the heat sink mounted correctly to the CPU. Do you have a custom cooling fan curve set for it? I'm not familiar with Kraken's software controls.
 
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