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Haswell Overclocking Guide [With Statistics] - Page 870

post #8691 of 19540
Quote:
Originally Posted by D-Dow View Post

I've tried that countless times and every time it creates an "overclocking failure"...it will start up then shutdown, then start up again with the failure message...this is set the RAM lower to like 1578 or something. The Cosair Vengeance 1600 DDR3 does not like you setting Anything other than 1600...then of course, when you set the BLCK higher there 1600 changes higher, but the BIOS knows that you are at the matching memory setting for the hardware that's in there - the z87 Sabertooth It won't allow me to set 1600 to 1866 or the 1600 to 1500-whatever, it Never boots for that

When I changed my BLCK to 100.1 I couldn't get stable with 4.6GHz When I went back to 100.00 I was stable again.
post #8692 of 19540
Quote:
Originally Posted by Cyro999 View Post

Wasn't you testing with x264 and using higher OC?
Well then your temps are inflated by like ~3-10c+ depending on if you airflow is awesome in an ideal case or bad

Yes x264 ran through 20 loops on my 44x @ 1.32v vcore. However it often hit 85c. I am trying to see if I can get away with 42x on a lower vcore, to keep my fans and heat down for 24/7 usage.

Edit: testing out 1.255v vcore for x264 20 loops. Science all up in here.
Edited by Mysticode - 1/19/14 at 2:50pm
post #8693 of 19540
OH LAWD ITS WORKIN DAT 4.8ghz

"Only" took 1.38 vcore in bios though. Still running x264 and haven't 'sploded yet, vcore is showing 1.408 on load. Should I be worrying about degradation at this high vcore? Is it safe for 24/7 usage? Temps averaging 76c
post #8694 of 19540
Anyone here with an ASUS board.. do you see a huge discrepancy between what you set in BIOS for cache vs. what you see in HWInfo? Example, I've set mine to 1.28v but after exiting BIOS and going back in it shows 1.33v - it still shows my 1.28v as the setting but shows 1.33v as the actual volt. This is also in HWInfo.
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post #8695 of 19540
Quote:
Originally Posted by lombardsoup View Post

OH LAWD ITS WORKIN DAT 4.8ghz

"Only" took 1.38 vcore in bios though. Still running x264 and haven't 'sploded yet, vcore is showing 1.408 on load. Should I be worrying about degradation at this high vcore? Is it safe for 24/7 usage? Temps averaging 76c

Still better than mine. I'm at 1.425 vcore.... Been at this or higher for months now, so as long as temps are in check id say its ok for 24/7
post #8696 of 19540
Quote:
Originally Posted by Darkwizzie View Post

The issue is that x264's stress runs lag the computer a lot. The first run which puts CPU usage at like 50% is fine, but after that the second pass and the loops all lag a lot. In my opinion, a minimum of 10 pass is needed to achieve a good stability. And this is by no means a guarentee. For my CPU it's fine. But don't be suprised if running 10 or less allowed some instability through.

Ya I noticed it definitely lags, but I'm okay with it. I just hate doing my internet browsing on my phone....it's so slow and inconvenient on a smartphone versus a desktop with m/kb.

I just wanted to know if doing other things would "interfere" with x264 being able to catch bad OCs. I really like Prime95 Blend because I can leave it running and still do my daily tasks....it's just Prime95 is so taxing on non delidded Haswell.
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post #8697 of 19540
Quote:
Originally Posted by bond32 View Post

Still better than mine. I'm at 1.425 vcore.... Been at this or higher for months now, so as long as temps are in check id say its ok for 24/7

What is unsafe vcore anyway? And other unsafe voltages? I can't really afford another 4670k so I want to make sure I'm not killing it.
post #8698 of 19540
Dat intel tuning plan doh.
post #8699 of 19540
Quote:
Originally Posted by jameyscott View Post

Dat intel tuning plan doh.

but i wanna keep the first oneeee...
post #8700 of 19540
Quote:
The issue is that x264's stress runs lag the computer a lot.

You can set it to low priority if you want, or rather i often run the encoder at low priority - i don't know if x264 bench can do that, it resets to high. Maybe it's in the script?

Might take longer to catch instability, but i've accidentally encoded for like 6 hours a couple times while playing performance sensitive games without noticing >.>
Quote:
Originally Posted by lombardsoup View Post

What is unsafe vcore anyway? And other unsafe voltages? I can't really afford another 4670k so I want to make sure I'm not killing it.

I doubt 1.4vcore will kill CPU, pretty sure it won't. You may see degradation though. I'm using ~1.36 atm with ~15-17c or so ambients and a silver arrow (ht off) and i wouldn't go up another 100mhz, at least without cold temps i think. This is somewhat safe - but i'd rather be on the safer side for just 100mhz. I might revise that over time, depending on how results are and how other chips do.

If you're getting 80c average on hottest core and then you delid and switch to a cool water loop - that's now like 50c tongue.gif (so i'd do that for really, really pushing chips near degradation volts)
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