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Haswell Overclocking Guide [With Statistics] - Page 1079

post #10781 of 19540
Quote:
Originally Posted by angelotti View Post

Yes, but make sure the reading is correct, on mine (asrock) it reads 0.920V under prime while vid is actually 1.260V. If the reading is wrong like mine, don't go upping the 'core voltage' under the idea that you have lots of headroom.

what clock are you at with 1.26v ?
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post #10782 of 19540
Is it recommended to use Intel extreme tuning utility to stress test haswell chips? As ive heard prime and other tests can damage ivy and haswell cpu's.
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post #10783 of 19540
Quote:
Originally Posted by RyReZar View Post

Is it recommended to use Intel extreme tuning utility to stress test haswell chips? As ive heard prime and other tests can damage ivy and haswell cpu's.

They're fine as long as you use them on manually controlled volts. I use x264 and some fft lenghs on prime 27.9 for testing.
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post #10784 of 19540
Thanks for the help, fellas.
Quote:
Originally Posted by Cyro999 View Post

It's harder to be stable with higher vcore, you need increased VRIN etc (and vrin llc) (also called VCCIN)

Also, you need to make sure you have a vcore sensor, and not a VID sensor. cpu-z version 1.64.0 works for a lot of people and versions after that have been broken for a lot of people. It might be throwing way more volts at load without you knowing.
Makes sense.

That said, I'd be confused on what's actually reporting the right numbers, if some of them are being thrown off. How do we know? For what it's worth, I've opened up multiple sensor programs to get a sense, and they seem pretty uniform. I don't know how they compare, but here it is. Let me know what you guys think. BTW, this is on AUTO with simply the multiplier set to 42. I changed nothing else. Haswell seems much more finnicky than Ivy so far.




Any idea what a safe, or sensible increment would be for upping VRIN with V.Core? I was under the impression that VRIN (I believe it's called Eventual Input Voltage on my board) adjustment was mainly necessary at much higher voltages. 1.3+.

BTW, forgot to mention that ran the same Manual Mode 4.3, 1.2 Volts with x264 all night, no crash. (10 Hours) If that lends any clues to anything. Prime is what killed me.

Quote:
Originally Posted by coelacanth View Post

Here's a shot in the dark. Sometimes CPU-Z shows VID rather than Vcore (depending on the mobo, though you have Asus, which tends to show Vcore). Anyway, if the 1.168v is VID, and you're using adaptive voltage, then under Prime it's probably spiking to something like 1.268v. Check out your Vcore with HWInfo.

With Manual voltage the Vcore under load will overshoot VID by .02v - .03v ish. With Adaptive, it will overshoot (under AVX instructions) by as much as .1v.

I definitely wasn't using adaptive voltage.
Edited by saelz8 - 3/6/14 at 1:02pm
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post #10785 of 19540
Quote:
Originally Posted by lilchronic View Post

what clock are you at with 1.26v ?

42 multi at 1.260V for almost everything including prime small/large/manual 1344 for over 2h. Normally i need 1.280-1.285V for 42 to be crash proof under regular x264 encoding (regardless of input, 1.8 to 2.0V or cache 33/1.2V to 38/1.25V).
I’m staying at 1.260 for now because i’m testing C6/7 states, which resets (no bsod) pc under load (instantly on prime and somewhere around 30 to 60 min under x264 regular encoding) when they are set to enabled together! I only tested them individually for ! 10 min with prime and it’s fine. I need to test for longer. PSU is fine by the way, corsair HX650 Professional and under medium load it’s fine with both C6/7 states (idle is stable, sleep/wake is stable).
post #10786 of 19540
Thread Starter 
Quote:
Originally Posted by RyReZar View Post

Is it recommended to use Intel extreme tuning utility to stress test haswell chips? As ive heard prime and other tests can damage ivy and haswell cpu's.

Read the first post.

 

Cyro's running around answering everything pretty much in the first page for ages now.

I'm tempted to just rename this entire thread to "Haswell Guide: READ THE FIRST POST".

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post #10787 of 19540
Quote:
Originally Posted by Darkwizzie View Post

Read the first post.

Cyro's running around answering everything pretty much in the first page for ages now.
I'm tempted to just rename this entire thread to "Haswell Guide: READ THE FIRST POST".

That still wouldn't help. You know it in your heart.
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post #10788 of 19540
Seems I might have a pretty good chip for once. 4770k at 4.7ghz with 1.25v and vccin at 1.93v. Chip is delidded and sits in an evga stinger under water with a single 120 rad never going over 60c. Don't think dropping volts is necessary unless 1.25 is too much. Any opinions or suggestions.
post #10789 of 19540
Thread Starter 
Quote:
Originally Posted by coelacanth View Post


That still wouldn't help. You know it in your heart.

Well the title says 'Haswell Overclocking Thread [With Statistics]'. It doesn't outright say 'Haswell OC Guide', although the 'with statistics' part might hint at it. I can see how a person can come to a thread and not realize it's a guide, not just a thread.

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post #10790 of 19540
Quote:
Originally Posted by davwman View Post

Seems I might have a pretty good chip for once. 4770k at 4.7ghz with 1.25v and vccin at 1.93v. Chip is delidded and sits in an evga stinger under water with a single 120 rad never going over 60c. Don't think dropping volts is necessary unless 1.25 is too much. Any opinions or suggestions.

You are sitting pretty good if you got 4.7 with 1.25v, why not try for 4.8 or 4.9 smile.gif Heck, I'd probably take it up to 1.5v if it meant getting 5ghz smile.gif
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