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Low Quality I5-3570k CPU? OC temperature/vcore too high with Hyper 212 Evo - Page 5

post #41 of 57
Thread Starter 
Quote:
Originally Posted by glina View Post

Cool. Thanks for the update.

Watch out with the negative offset - at one point you will reach a level which will make your CPU unstable when idle.

Currently P95 stress test at -.115v and it looks stable at 1.096v-1.112v with solid temps.

How much is "too" much undervolting and how will I know when my CPU becomes too unstable from undervolting?
Is there a way to test if I have under-volted too much?

Thanks in advance.
Edited by NopeNope - 1/30/13 at 3:07pm
post #42 of 57
It'll crash when it sits idle, or when you are doing simple stuff like internet browsing. There's no way to test for it though.
post #43 of 57
Go with negative offset of -0.070V or simular and LLC level 5.That's how i ran 4.4Ghz.Offset of -0.065V and LLC 5 = 1.120-136V but not too low idle.That's how you deal with negative offsets,or atleast that's what i heard.
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post #44 of 57
I'm at 1.056 load vcore prime95 for 4.0ghz.... 4.5ghz I need 1.168 load vcore and max out at 65c temp. Would be a good idea to turn off all power saving features when using - offset except for speedstep. I find the performance better with just speedstep on anyways. Also with just speedstep I can mess with power profiles in window and change on the fly like if I'm gaming and need 100% cpu power. Less stuttering that way.
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post #45 of 57
Thread Starter 
I dont know what is up with my board or CPU, but I am currently at -.130v and my volt caps around 1.080 under load at 4.0ghz.

I am trying to find the lower limit, but I may just leave it at -.120v (1.096vcore max) and call it.

I idle at about .824v and it seems stable.
post #46 of 57
Look here:
http://www.anandtech.com/show/5763/undervolting-and-overclocking-on-ivy-bridge

these guys were able to run 3.9G at a constant 0.9V, but I think your Asrock cannot run with a constant voltage.

The thing is, when you add negative offset, you are also lowering the idle voltage which is around 0.9V default and probably <0.8V with your negative offset. Play around, you cannot damage anything this way.

You may also try a higher o/c with your current offset and the vcore of 1.08V. 4.2GHz should still work.
post #47 of 57
Thread Starter 
Quote:
Originally Posted by glina View Post

Look here:
http://www.anandtech.com/show/5763/undervolting-and-overclocking-on-ivy-bridge

these guys were able to run 3.9G at a constant 0.9V, but I think your Asrock cannot run with a constant voltage.

The thing is, when you add negative offset, you are also lowering the idle voltage which is around 0.9V default and probably <0.8V with your negative offset. Play around, you cannot damage anything this way.

You may also try a higher o/c with your current offset and the vcore of 1.08V. 4.2GHz should still work.

I actually just read that article yesterday. Needless to say, it was very useful.
So when I had -.130v, it still spiked vCore to 1.096v.
When I have -.120v, it is stable around 1.088v, and still spikes to 1.096v, so I may just leave it at -.120v since I dislike the spikey-ness.
My idle voltage is around .840v, and it hasnt crashed yet. Is that high enough?
post #48 of 57
To be honest no one really cares about idle voltage. Unless you're using some weird LLC setting you shouldn't be using and your idle voltage is past safe limits.


The problem in answering your question is that it sounds like you have some form of power saving feature on, explaining why your idle voltage is so LOW.
post #49 of 57
Quote:
Originally Posted by FlashFir View Post


The problem in answering your question is that it sounds like you have some form of power saving feature on, explaining why your idle voltage is so LOW.

No. This is how offset works.

The cpu vid for 1600mhz is for example 0.92V, and what the mobo gives is that 0.92V - offset.
post #50 of 57
nice OC and way to stick with it!
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