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Helpful ReplyConcern with high VCore

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XiuzSu
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2018/05/27 21:56:23 (permalink)
I have a i7-3820 OC to 4.75GHz, I'm currently very stable with it and it doesn't seem to run hot at full load. I'm a little concerned with the almost 1.52v I HAVE to use to have this OC stable. Any lower and it will crash during stress test, and lowering it even more means it will just make it not boot into Windows.
 
Temps idle are at 40c.
Temps under normal use (15-30% usage) 43-55c.
Temps at full load are < 68c. Check it out below.
 
This is a OC being used on a 24/7 system.
 
I was told that having this 1.52 voltage could damage the board itself. I would just like to confirm if that would be the case, or of this is something the board was made to handle. I would like to be clear, I would be OK with having to replace the CPU at a later time, but not the motherboard. Please advise.

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bob16314
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Re: Concern with high VCore 2018/05/28 04:57:16 (permalink) ☄ Helpfulby XiuzSu 2018/05/28 05:33:43
Seems like you have kind of a lame i7-3820 that needs a bit more Vcore than most do at that frequency..You can check out the i7 3820 - 4820 Overclock Club (and other places) to see what Vcore others are needing at various frequencies.

The VID Voltage Range has a maximum of 1.350V which can be what some of those need just to run at stock frequency.

The TjMax (throttling temperature) temperature is 100C for that CPU.
 
I wouldn't worry about the motherboard, it'll probably let you apply way more Vcore than you have now and be fine..The CPU is of more concern..You should also be running the latest BIOS for your motherboard which may include stability and other enhancements..VREG and System temps are usually rated up into the 90C neighborhood.

I would run the Intel Processor Diagnostic Tool stress test or a pass of IntelBurnTest for quick stability testing and adjust your Vcore down until it fails, then bump it up a notch or two..Roll from there.

Nobody can say how long your CPU will last at that Vcore..Is overclocking safe?  

What you can do to reduce wear and tear and increase the CPU life is to enable C-States and Intel SpeedStep (especially) in the BIOS, which they should be by default..And use the 'Power saver' plan in the Windows Power Options..No sense in running your CPU at full blast all the time when it's not neccessary.
 
You should be sure that Temperature Monitoring for the CPU is enabled in BIOS too, which it should be by default, otherwise it won't throttle at TjMax.
 
 
post edited by bob16314 - 2018/05/28 05:08:00

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Sajin
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Re: Concern with high VCore 2018/05/28 11:38:40 (permalink)
I'd be more worried about the cpu than the motherboard. You shouldn't be running more than 1.45v on the cpu for 24/7 use.


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XiuzSu
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Re: Concern with high VCore 2018/06/10 13:51:30 (permalink)
Hey guys, thanks for the feedback. I thought I'll give you an update. I've decided to bring the OC down to 4.3GHz, using 1.25v, temps under 46c at full load. As this will soon just be my media server, this would be good.
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Sajin
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Re: Concern with high VCore 2018/06/10 13:57:36 (permalink)



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bdary
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Re: Concern with high VCore 2018/06/12 07:15:50 (permalink)
That's some pretty low temps for that much voltage.  Here's a comparison > http://forums.evga.com/4808-GHz-with-BIOS-R210-m2129272.aspx
 

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Samsung 960 EVO ~ 840 Pro ~ 840 Std ~ EVGA 1300W G2 ~ CM HafX

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