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The Gigabyte Z87/Haswell Overclocking(OC) Guide - Page 262

post #2611 of 3254
okay,
Well I played for quite while. I can get 4.5ghz at 1.29 very stable with 1.8vin and 1.2vring. However, my cooler does not handle those temps well. For normal usage it is just fine. I can run just about anything without issue, but I ran small FFTs on prime95 and my temps were through the roof. hit the 90s on the main core before the cooler caught up, but wasn't willing to risk seeing if it would bring it down. The overall CPU hit 80c (mobo reading). Just felt too high and a bit risky too me.
So I am at 4.4ghz 1.24, 1.8 and 1.15. Not sure I need the 1.8 or 1.15 set in the bios as it defaults to 1.8 on auto and I seem to have no issues with the ring running at the default 1.05.

FYI the absolute best stability test I found was to run prime 95 for 10 minutes, switch to AIDA64 for 10 minutes and then immediately switch back to prime.

It would cause a crash when running straight prime or straight AIDA would not for over 20 minutes.
Edited by Zarich - 2/28/14 at 11:58am

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post #2612 of 3254
Quote:
However, my cooler does not handle those temps well. For normal usage it is just fine. I can run just about anything without issue, but I ran small FFTs on prime95

Solution: Don't run small fft's on newest version of prime. If you want crazy temps there are better ways to put you at 100c than prime, avx2 linx is significantly hotter, no way you wouldn't throttle in it right now.

Take your temps from x264. If you want a more extreme test, do custom in prime version 27.9 and use fft lengh 1344-1344
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post #2613 of 3254
What are these on/of switches in gigabyte bios? For example if you look in the OP thread, on the first picture of bios and then CPU Base Clock row.
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post #2614 of 3254
They are to do with switching settings instantly instead of having to wait for apply IIRC (not actually sure though)
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post #2615 of 3254
Turbo is out the question , I wanted it for the super low idle temps. When I enable turbo it ups the uncore even though I have it selected at 34x. Found out from reading post that gigabyte boards lack a min-max uncore option. Anyway to get lower IDLE temps without loosing stability
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post #2616 of 3254
Quote:
Originally Posted by Unknownm View Post

Turbo is out the question , I wanted it for the super low idle temps. When I enable turbo it ups the uncore even though I have it selected at 34x. Found out from reading post that gigabyte boards lack a min-max uncore option. Anyway to get lower IDLE temps without loosing stability

You can use the 34x (8x-40x) option later, it's just better to use 33 while setting an oc for core etc
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post #2617 of 3254
With the switches. DON"T set on apply on the multiplier before setting the voltage. Yeah.. I froze in the bios doing that.
post #2618 of 3254
So this is my latest try to OC my CPU and i think CPU is not from the good once or either i am doing something wrong COing i am new to it thou.
I did :
Cpu clock at x44
Uncore is at x40
VCCIN is at 1.9v
Vcore is at 1.34v
Vring is at 1,2v
LLC is Extreme
Power saving only C3 is enabled and turbo at auto rest disabled.
I did 42x with 1.18 no idea why i need so much 44x.
It ran AIDA for 5h with no problems average temps are 73c-76c not very high i think.
What am i doing wrong or it is just CPU is bad and if someone could give me some advices or changes to do biggrin.gif
Thanks
Edited by ludkoto - 3/2/14 at 7:42am
post #2619 of 3254
Quote:
Originally Posted by ludkoto View Post

So this is my latest try to OC my CPU and i think CPU is not from the good once or either i am doing something wrong COing i am new to it thou.
I did :
Cpu clock at x44
Uncore is at x40
VCCIN is at 1.9v
Vcore is at 1.34v
Vring is at 1,2v
LLC is Extreme
Power saving only C3 is enabled and turbo at auto rest disabled.
I did 42x with 1.18 no idea why i need so much 44x.
It ran AIDA for 5h with no problems average temps are 73c-76c not very high i think.
What am i doing wrong or it is just CPU is bad and if someone could give me some advices or changes to do biggrin.gif
Thanks
Usually all cpu's hit a point where the vcore has to be increased greater proportionately to hit the target OC, and it varies from cpu to cpu.
For example once mine goes past x45 it starts taking a lot more voltage. So it's probably just your cpu....but make sure x40 uncore is actually doing something for you, if not then you can reduce it and probably vring along with it.
post #2620 of 3254
Quote:
Originally Posted by mandrix View Post

Usually all cpu's hit a point where the vcore has to be increased greater proportionately to hit the target OC, and it varies from cpu to cpu.
For example once mine goes past x45 it starts taking a lot more voltage. So it's probably just your cpu....but make sure x40 uncore is actually doing something for you, if not then you can reduce it and probably vring along with it.
Quote:
Originally Posted by ludkoto View Post

So this is my latest try to OC my CPU and i think CPU is not from the good once or either i am doing something wrong COing i am new to it thou.
I did :
Cpu clock at x44
Uncore is at x40
VCCIN is at 1.9v
Vcore is at 1.34v
Vring is at 1,2v
LLC is Extreme
Power saving only C3 is enabled and turbo at auto rest disabled.
I did 42x with 1.18 no idea why i need so much 44x.
It ran AIDA for 5h with no problems average temps are 73c-76c not very high i think.
What am i doing wrong or it is just CPU is bad and if someone could give me some advices or changes to do biggrin.gif
Thanks

That point usually doesn't come at ~1.18vcore. I would re-validate the 4.2ghz OC with x264 (~5 pass, it's in the haswell overclocking thread with statistics OP on OCN) and shoot for 4.3ghz at ~0.03-0.06vcore higher using vrin 0.6 above vcore always
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