4670K 3.8GHz at Vcore 1.012

aylafan · Mar 13, 2014

Would this stay stable at 3.8GHz? Any advice on overclocking? I'm trying to keep my computer as quiet and stable as possible.

4670K + ASRock Z87 Extreme4 with everything on Auto and default settings it showed Vcore at 1.012 in my BIOS. So I did a minor overclock with that Vcore.

CPU Ratio 38
CPU Cache Ratio 36
CPU Vcore Voltage Override 1.012
CPU Vcore Voltage Offset 0.001
CPU Cache Voltage Auto
CPU Input Voltage Auto

Immaculate · Mar 13, 2014

I doubt it. Run Prime95 for a couple hours then see how it does.

aylafan · Mar 13, 2014

Immaculate :

Okay. I'll run Prime95 for around 4 hours and see if it crashes. If it doesn't crash then I'll post the results.

aylafan · Mar 13, 2014

So I ran Prime95 for 3 hours and it didn't crash with my 4670K 3.8GHz at Vcore 1.012. I think the Vcore is pretty low for 3.8GHz. What do you guys think? Any advice to bump it up to 4 or 4.2GHz?

Immaculate · Mar 14, 2014

Go ahead. Try at 4Ghz 1.020 I don't think it will work. I think your not setting something right, possibly the fixed voltage or you have the Haswell chip from the heavens.

Immaculate · Mar 14, 2014

Set the CPU Input Voltage to FIXED and try.

aylafan · Mar 15, 2014

So I tried 4GHz at 1.020 and it crashed in IntelBurnTest. So I did a safe bump of 0.05 on the Vcore to 1.062 and did some more tweaking. Does this look correct or should I change some values?

CPU Ratio 40
CPU Cache Ratio 36
CPU Vcore Voltage Override 1.062
CPU Vcore Voltage Offset 0.001
CPU Cache Voltage Override 1.19
CPU Cache Voltage Offset 0.001
CPU Input Voltage Fixed 1.85
LLC Level 1

Y0GI · Mar 15, 2014

Looking real good, so far.

Yogi

Immaculate · Mar 15, 2014

what do all the voltages say in the BIOS when everything is on AUTO/STOCK? And then again with the 4.0Ghz OC with everything on AUTO.

aylafan · Mar 16, 2014

Immaculate :

Stock/Auto
CPU Vcore Voltage 1.012
CPU Input Voltage 1.760

4GHz/Auto
CPU Vcore Voltage 1.199
CPU Input Voltage 1.776

The ASRock Z87 Extreme4 motherboard only shows those voltages and PSU voltages.

Immaculate · Mar 16, 2014

Yes. Go put it back how you had it. Good job, good chip.

aylafan · Mar 16, 2014

Immaculate :

Thanks man. 4670K batch# 3339B838 Costa Rica if it makes any difference.

usmc21 · Mar 23, 2014

aylafan :

I have the same chip (bought a month ago from MicroCenter). It's a complete dud.
4.6ghz @ 1.400v

md1032 · Mar 23, 2014

Holy crap, 1.400 V? That's nuts.

The OP has a great chip. Getting those kinds of temps at 3.8 Ghz. on the stock cooler is simply amazing. I was bouncing off the thermal limit with mine. I say keep going. My overclock is based on a 95°C max under fully stressed conditions, ~10 mins, which is a comfortable (for me) 10°C below the thermal throttle limit.

The noise level has more to do with the type and number of fans you have, the quality of your cooler and its fans, etc. Overclocking won't do much other than give those fans some heat to push out of your case.

Immaculate · Mar 24, 2014

Yes, OP whenever you OC higher, let us know, we be curious.

usmc21 · Mar 25, 2014

md1032 :

Mine is delid/lapped/liquid pro'd. Getting excellent temps, but hit voltage wall. Max temp 74C at 1.45v Lol.

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4670K 3.8GHz at Vcore 1.012

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