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Haswell Overclocking Guide [With Statistics] - Page 702

post #7011 of 19539
Quote:
Originally Posted by brandon6199 View Post

Voltage for cache/uncore is set to AUTO and my uncore multi is set at 35x.

Other than that, XMP is off, and I'm just upping the multiplier and voltage trying to get as high as I can. I haven't even played with the cache voltages or multi yet...

At the stock cache multiplier, you should be able to put the cache voltage at 1.20v, just to make sure that you are eliminating that as a potential source of instability - while at the same time preventing your board from delivering too much power to it. thumb.gif
post #7012 of 19539
Brandon, what errors are you running into, what are you doing with VRIN and have you only tried using Prime?


As for uncore - some cinebench runs. There's two ways to benchmark - either restart, go bios, change settings, come back to OS and re-load everything (which creates a variance) or change settings in OS

Changing settings in OS and running cinebench realtime priority:

4.5/4.5 - 930, 931, 931, 931, 931

4.5/4.0 - 931, 931, 931, 931, 931

4.6/3.4 - 949, 949, 949, 949, 949

I tried to benchmark x264, but it's impossibly difficult to pick up fractions of a percent with such a program. I know for sure that core multiplier is important enough to never give up, so nothing has changed there and we are all back to overclocking the core with 34x uncore, and then overclocking uncore after CPU is stable for epeen and maybe potentially a slight performance gain
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post #7013 of 19539
Hello!

This is my build: http://www.flickr.com/photos/sebastian-mihail/11423392263/

Overclocked @ 4.4ghz with 1.149 V tested with prime95 for 4 hours.

http://www.flickr.com/photos/sebastian-mihail/11431586313/

Build specifications:

Intel Core i5 4670K 3.4GHz ( OC: 4.0@1.035V, 44@1.149V )

Noctua NH-D14

Asus Z87-K

Kingston HyperX Blu 16GB (4x4GB) DDR3 1600MHz CL9 1.65V

XFX DD Radeon HD 7870 GHz Edition (Tahiti LE) 2GB GDDR5
( OC: GPU@1246Mhz MEM@1566Mhz )

Creative X-FI Xtreme Music

Hard-drives:
WD 1TB SATA-III 7200 rpm 64MB Caviar Blue

Samsung 1 TB SATA-II 7200RPM 32MB Spinpoint F DT

SSD: Kingston 120GB SATA-III 2.5 inch V300 SSDNow

Antec EarthWatts 650W

Antec Three Hundred

DVD-Writer Samsung SH-S223F/BEBE

4x Arctic Cooling F12
1x Arctic Cooling F14
1x Noctua NF-P12
1x Noctua NF-P14
post #7014 of 19539
Thanks guys, I'll give it another shot tomorrow, and yes I've only tried Prime95.

Also, is everyone using HT on? Or does HT on/off not make that big of a difference in terms of how high of an OC you can hit on Haswell?
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post #7015 of 19539
It makes a difference on temps, not really OC potential AFAIK
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post #7016 of 19539
call me crazy, but does anyone else feel that custom looping Haswell is kind of redundant once you delid? I feel like you're not going to get temp limited until you're well into the degradation zone anyway lol...
post #7017 of 19539
Dark's not delidded, i'm not. He's running >1.4vcore on i5, i'm running ~1.36 with ht off - if i were to delid, i'd stay at the same core multi or push up 50 or 100mhz. On i5 delid+custom water would feel really redundant unless you like colder temps, on i7 though i don't think it would (gaining that ~10-15c hurts)
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post #7018 of 19539
Quote:
Originally Posted by fleetfeather View Post

call me crazy, but does anyone else feel that custom looping Haswell is kind of redundant once you delid? I feel like you're not going to get temp limited until you're well into the degradation zone anyway lol...

Nope, the lower the temps the better, period.
post #7019 of 19539
Quote:
Originally Posted by Doug2507 View Post

Nope, the lower the temps the better, period.

what are you gaining from those lower temps? all i can think of is long-term cpu longevity (for those who aren't upgrading to broadwell, i guess) and epeen.
post #7020 of 19539
Quote:
Originally Posted by fleetfeather View Post

what are you gaining from those lower temps? all i can think of is long-term cpu longevity (for those who aren't upgrading to broadwell, i guess) and epeen.

We are gaining the ability to run higher vcore volts without getting throttled by temps,so for us with medicore chips its the ability to get higher clocks.Also a fully watercooled rig is really quiet biggrin.gif
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