4670k z87-gd65 OC - need help

Dequstator · Sep 16, 2013

Hi, today I tried to OC my 4670k. I used that guide: http://www.tomshardware.co.uk/forum/id-1722630/intel-god-quick-dirty-guide-4ghz-haswell.html .First of all, my specs:
4670k
z87-gd65 gaming (newest bios)
2x4gb 1333mhz
shadow rock 2 cooler
OCZ 600W PSU
hd5870

I went through all steps but i cant get stable settings.. When im doing stress test with prime95 i have ~85c temps and bsod after like 5-10 mins. On lower VCCIN and VCORE and VRING ive got bsod after 1-2 mins. Here are screens with my bios settings.

What im doing wrong? Im a newbie in OC, so any tips will be good.

PS. Sorry for my bad english

kiezz · Sep 16, 2013

i think the best thing you can do is load defaults in bios so start from all default values, so most settings will be on auto,
now make sure your ram speed and timings are set correct and correct voltage too,
disable intel speedstep and cpu spread spectrum and any energy saving settings,
then set cpu core ratio to 42 and then your cpu core voltage to 1.25v,
then manually set your VCCIN voltage to 1.85v , save settings and boot into windows,
when windows loads open core temp and intel burn test / prime95 / OCCT whatever your preference but do a 10 minute test keeping an eye on temperatures,
you should pass this test and then restart to bios and change the core ratio to 43 save changes and load windows do a 10 minute test if it fails then raise core voltage to 1.27v if it fails again raise it to 1.29v and 10 min test (if you need 1.3v for 4.3ghz im afraid you have a bad chip)
you get the idea once you get 4.3ghz stable on a voltage then raise your multiplier by 1 and test again
the trick is not too change too many settings at once and don't start at the deep end just gradually work your way up making sure your stable it may take longer but worth it in the long run

Dequstator · Sep 16, 2013

First of all, thanks for Your answer, I will do it tommorow and post results. I need to set cpu core multi to 42x and leave default settings on ring ratio, right? One more question, why i cant see XMP option in bios?

kiezz · Sep 16, 2013

no problem id be surprised if its not something simple making you unstable, yeah leave ring ratio on auto or whatever it is on default which i guess will be auto, xmp only shows in menu if the ram you use supports it,
there is an option in your bios too called enhanced turbo it will be on auto by default you should change this to disabled so it won't effect your manual overclocking

Dequstator · Sep 16, 2013

At 4.2 1.25vcore it passed OCCT (10 mins) test, at 4.3 1.25vcore it failed after some mins but on prime95 (idk why i used it lol), 4.3 1.27vcore passed OCCT test with temps max. 77C on hottest core. I think i will leave 4.3ghz for now till i change my cooler cuz i dont want to get like 80+C temps. If 4.3 1.27 pass, lets say 7hour OCCT (overnight) test should i lower vcore and test it again or leave it like now?

kiezz · Sep 16, 2013

i wouldn't do a 7 hour test as i don't think its worth it around 2 hours will show a problem if there is one but if you feel you want to work away everyone has different opinions on stress testing,
you should be ok to run it to around 85c a core i think realistically on an air cooler a stress test of 4.4ghz will hit that but you won't see that in every day use,
i think your chip does not look too bad now 4.4ghz at 1.28v to 1.3v looks attainable just hopefully using the lower end of that,
you could try for your own tests just bring the VCCIN down to 1.8v and see is it still stable and a little cooler or say instead of increasing the core volt you can bring that to 1.9v and see will that help stability,
post back with any results you get i would be interested to see them and it might help anyone who googles the same problem

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4670k z87-gd65 OC - need help

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