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Haswell Overclocking Guide [With Statistics] - Page 301

post #3001 of 19649
Quote:
Originally Posted by Apple Pi View Post

I thought I had service pack one on this machine I'll run windows update when I get home to check and see if it's missing. As far as temps go, I'm using an EK HF Block with a 680 in the loop but I also have a EX240 and EX280 cooling it.

At 1.27vcore, my reported CPU package power in blend random fft was ~110w, 8k fft it was like 140w, by 1.35v you're probably closer to 200 and there's no clean way to pull that through TIM and glue interface, it's probably really messy. That's 27.9, not hotter/higher draw 28.1. I'm not sure how accurate CPU package power readings are, but they seem to correlate really really strongly to temperatures, so it seems consistent in that way at least
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post #3002 of 19649
Quote:
Originally Posted by Cyro999 View Post

What vcore were you at and what was your VRIN before and after?

Vcore - 1.115v
Vrin: 1.780
This was linpack avx2 stable. For prime i had to go up to 1.850v
post #3003 of 19649
You are applying max or close to max LLC to VRIN? Avx2 stuff pulls so much power.

If you were not, then try it - if you were, then did you try going down instead of up? 1.6ish? It's possible that either ratio works, and you were sat in a bad place in the middle
Edited by Cyro999 - 9/23/13 at 10:58am
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post #3004 of 19649
Quote:
Originally Posted by Cyro999 View Post

You are applying max or close to max LLC to VRIN? Avx2 stuff pulls so much power.

If you were not, then try it - if you were, then did you try going down instead of up? 1.6ish? It's possible that either ratio works, and you were sat in a bad place in the middle
Yes, i had LLC on extreme or 1 lower all the time. I will try 1.6 and see if it does anything. Iam pretty sure, right after iam done with prime, i won't pass linpack avx2 with 1.850 vrin as i was getting better results below 1.800 (less 124 besod's). But now prime needs more.
Quote:
Originally Posted by Hyolyn View Post

I've experienced similar results even getting instabilty with to high VRIN, and i have to say everything about overclocking haswell has been weird to me.
It's a super chip but i do really miss the simplicity of overclocking the AMD FX Series, lol!
I already made my mind up on broadwell. It surely cant be worse than haswell with its fivr.
post #3005 of 19649
So out of nowhere, my PC started rebooting. Stock settings, and even while just in the BIOS. Happened while I was flashing the BIOS too, lol. In Windows, my screens sort of collapse to a single horizontal line and the next thing I see is the windows didn't boot properly screen. This happens pretty randomly and even while just browsing the web. However, I can get it to happen real fast w/ AIDA64.

If I had to guess I would say PSU. But I've had trouble getting this board setup and the CPU temp is balls. I'm going to put in the old board and cpu and see how it goes. Hopefully everything RMA's well. frown.gif
post #3006 of 19649
Quote:
Originally Posted by t0tum View Post

Yes, i had LLC on extreme or 1 lower all the time. I will try 1.6 and see if it does anything. Iam pretty sure, right after iam done with prime, i won't pass linpack avx2 with 1.850 vrin as i was getting better results below 1.800 (less 124 besod's). But now prime needs more.
I already made my mind up on broadwell. It surely cant be worse than haswell with its fivr.

What do you mean by that? I mean, surely braodwell and skylake will have fivr too? Intel spent a ton of time working on it as like the main feature of haswell
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post #3007 of 19649
Quote:
Originally Posted by Cyro999 View Post

Even though you're on water, are you sure you're not missing service pack 1? (can't run avx without it)

Those temps seem too cold for 1.35vcore even on old cooler version of prime

exactly what I was thinking. Unless there is something else holding him back, that's waay too much v for that vcore if those are his temps. Something is just not meeting up =P You may have hit the nail on the head w/out the new instructions. Or of course could be running a stress test that doesn't include them. Something a lot easier on the cpu. Run small FFT prime or IBT on very high + and get back to us. Drop your uncore to stock and see if it allows you to lower your vcore and stay stable. 1.3 I could see for 4.5, 1.35 is a bit high. temps though, as mentioned several times now, not so much.

If I had to guess w/ no info, chip isn't being stressed 100%. Has to be.
post #3008 of 19649
Quote:
Originally Posted by Cyro999 View Post

What do you mean by that? I mean, surely braodwell and skylake will have fivr too? Intel spent a ton of time working on it as like the main feature of haswell
Rumour has it Intel is rolling back from fivr, or atleast part of it will be regulated by the board like it used to.
post #3009 of 19649
is it possible that the XMP profiles are so restricted i cant even change timings?
OOB was 9-10-9-27 and i tried to make 9-9-9-27 and it didnt even go past the bios screen lol
and dominator GTs were sold as great overclockers and was the top ram back in the day (still is for the good part lol)
 
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post #3010 of 19649
Quote:
Originally Posted by Cyro999 View Post

What do you mean by that? I mean, surely braodwell and skylake will have fivr too? Intel spent a ton of time working on it as like the main feature of haswell

I heard rumors that Broadwell won't be compatible with current Z87...and thats because Intel plans to modify the socket to move the FIVR off the CPU...it will still hold LGA 1150, it just won't be compatible with older Haswells
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