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Help With Overclocking

EpicRandomGuy
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Hi everyone! Today I started overclocking my 4670k, and I've been a little disappointed by the results so far. I read some tutorials before beginning, and even more while attempting to fix the problems I'm facing. These tutorials told me to use stress tests such as Prime95, AIDA64, and OCCT. To start with, I used Prime 95, and was discouraged when my system repeatedly froze and crashed on me (within about three minutes) even as I increased voltages and lowered clock speeds (I think I went as low as 4.0 GHz). As an act of desperation, I cranked voltages up a bit higher than I thought might be necessary for an (average?) overclock of 4.2 GHz. Since I'm definitely able to sit on the desktop without a freeze or blue screen, I decided to give AIDA64 a try. 

 

So far, the test has gone on for about 45 minutes. The overclock is as follows:

 

CPU: Intel i5 4670k

Cooler: Hyper 212 Evo

Clock Speed: 4.2 GHz

VCORE: 1.250 V

Uncore: 1.150 V

VRIN: 2.000 V

RAM is XMP enabled and everything else is default. The highest temperature reported by HWMonitor is 87 degrees (package), and temps are currently averaging around 65-70 degrees. 

 

I suppose I have a few questions based on the past few hours: Is there a reason that my computer failed to pass Prime95? Is passing AIDA64 enough to know that I have a stable system? Is not passing Prime95 a definite sign of instability? Since I lowered the clock speed because of Prime95's results, should I move it back up? Are these voltages a bit high for a 4.2 GHz overclock?

 

I know that's a lot of questions. Hopefully you guys can help me! Sitting here while the computer tests itself is so boring. 

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Luck of the draw. You got a crappy chip it looks like. What is your cooler?

PC: 4770K @ 4.0 GHz --- Maximus VI Hero --- 8 GB 2133 MHz Corsair Vengeance Pro --- EVGA 780 TI Classified @ 1300 MHz --- Samsung Evo 250 GB --- Corsair RM 750 --- Corsair Carbide Air 540 --- CM Storm Rapid-I (MX Blues with PMK Evergreen Keycaps) --- Windows XP --- Razer Naga --- Custom Loop Parts: 380I, EKWB 780 Classy Waterblock and Backplate, 240mm and 360mm XT45, Swiftech MCP655, EKWB multi option reservoir, Mayhems Pastel Red, Primochill Primoflex Advanced Clear Tubing, 5 SP 120 Quiet Editions --- Mobile: Surface Pro 3 (i5 128gb) with JD40 (MX Clears) and Microsoft Sculpt Mouse --- Galaxy S6

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@EpicRandomGuy

 

Did you set voltage to manual/constant before stress testing?  Or did you leave it on adaptive?

"I genuinely dislike the promulgation of false information, especially to people who are asking for help selecting new parts."

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Oh yeah, I meant to put that. It's a Hyper 212 Evo. 

What are your temperatures. I can't get past 4.2 Ghz with 1.4v so you probably got a bad chip like me

PC: 4770K @ 4.0 GHz --- Maximus VI Hero --- 8 GB 2133 MHz Corsair Vengeance Pro --- EVGA 780 TI Classified @ 1300 MHz --- Samsung Evo 250 GB --- Corsair RM 750 --- Corsair Carbide Air 540 --- CM Storm Rapid-I (MX Blues with PMK Evergreen Keycaps) --- Windows XP --- Razer Naga --- Custom Loop Parts: 380I, EKWB 780 Classy Waterblock and Backplate, 240mm and 360mm XT45, Swiftech MCP655, EKWB multi option reservoir, Mayhems Pastel Red, Primochill Primoflex Advanced Clear Tubing, 5 SP 120 Quiet Editions --- Mobile: Surface Pro 3 (i5 128gb) with JD40 (MX Clears) and Microsoft Sculpt Mouse --- Galaxy S6

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I don't think being a dud is all there is to it, since it can run one test and not the other...

Certain tests may stress different instructions, so for example AVX instructions might be unstable but SSE instructions etc might be.

LGA775 Overclocking Guide - LGA771 to LGA 775 mod - Rigs in spoiler - Subzero Overclocker - HWBOT - Sandybridge-E Frequency WR Holder

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Oh, okay. I'm going to try a few more tests and see what happens, if they're successful I'll overclock a bit more later. I would still like some more insight, but for now it seems relatively stable. 

You need to quote or "@" someone in order for them to know that you have responded.

 

Do more research on your BIOS.  You HAVE, absolutely HAVE to set voltage to manual/constant before stress testing.  Also, don't play with Cache speed or voltage, leave it at 38 and voltage to auto.  Cache doesn't impact performance and only causes instability with Haswell.

 

Some Guides:

http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/

http://linustechtips.com/main/topic/24019-load-line-calibration-why-overclockers-should-care/

"I genuinely dislike the promulgation of false information, especially to people who are asking for help selecting new parts."

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You need to quote or "@" someone in order for them to know that you have responded.

 

Do more research on your BIOS.  You HAVE, absolutely HAVE to set voltage to manual/constant before stress testing.  Also, don't play with Cache speed or voltage, leave it at 38 and voltage to auto.  Cache doesn't impact performance and only causes instability with Haswell.

Is cache one of the things I mentioned in the first post? I don't think I changed anything labelled cache on purpose. 

Thanks for the guides, I'll take a look!

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Is cache one of the things I mentioned in the first post? I don't think I changed anything labelled cache on purpose. 

Thanks for the guides, I'll take a look!

Uncore and Cache are the same thing.  Different motherboard manufacturers call different variables/settings, different names.

"I genuinely dislike the promulgation of false information, especially to people who are asking for help selecting new parts."

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@Faceman

 

Oooohhhh, okay. So put that back to default?

 

Also, I'm seeing no mention of Gigabyte boards having an adaptive/manual option in the BIOS, but here they say it only has adaptive in the form of an offset voltage option, which I left at +0. Does that mean adaptive is off?

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@Faceman

 

Oooohhhh, okay. So put that back to default?

 

Also, I'm seeing no mention of Gigabyte boards having an adaptive/manual option in the BIOS, but here they say it only has adaptive in the form of an offset voltage option, which I left at +0. Does that mean adaptive is off?

I'm not experienced at all with Gigabyte motherboards, I can't imagine that is true, because that is a major, major $%^& up.

 

I'm going to assume that it is always on adaptive, in which case, you shouldn't be running any stress tests, because adaptive voltage at 100% load will send much more voltage than is necessary into your chip and can cause numerous problems, including damage and death of the chip.

 

Do some more research online, maybe download Intel Extreme Tuning Utility, I seem to remember being able to control settings using their software.  Try playing games to test your overclocks, until you figure out what is going on with manual/adaptive voltage, don't risk running hard core stress tests, and, if you are stable in a game and your temperatures are ok, you should be happy with that.  Those stress tests are unrealistic loads and temperatures anyways.

"I genuinely dislike the promulgation of false information, especially to people who are asking for help selecting new parts."

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