i5-4670k oc to 4.4ghz at 1.22v

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JohnSmith4321

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Oct 6, 2013
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So i have a 4670k and i currently am running 4.4ghz at 1.22v. i was wondering if this is a good voltage for that oc.
i also want to know if i could achieve higher and what should the maximum voltage be.
i have a Asus Z87-A mobo and Ballistix sport 1600 memory.
 
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Deuce65

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Oct 16, 2013
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If you are reaching 4.4 at 1.220 then you can probably go higher with more voltage yes. Only one way to find out! Just keep an eye on your temps. I personally wouldn't go over 1.250 unless you have very good cooling but really the only way to know for sure how your particular chip performs is to experiment.
 
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Y0GI

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Jul 22, 2013
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That is a VERY good voltage for that OC. You have a great chip! 1.300 v. should be the maximum safe limit.

Yogi

 
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JohnSmith4321

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so i was able to achieve 4.5ghz but it required 1.25v i dont know if this is good or bad. if there are other settings that i need to change in order to achieve a stable system with less vcore.
 
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Y0GI

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Jul 22, 2013
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That is NOT good......... That is EXCELLENT!! As long as you stay below 1.300v., you're in fine shape!

Here is an easy to follow guide for OC'ing Haswell chips: http://www.tomshardware.com/forum/id-1722630/intel-god-quick-dirty-guide-4ghz-haswell.html

Yogi

 
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md1032

md1032

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Dec 31, 2007
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Sorry to hijack the thread, but I'm OC'ing my i5-4670k and I need advice. I'm getting the following:

4.4 Ghz.
1.26 V required (still BSOD's occasionally with 1.25 V)
95°C max in HWMonitor after ~10 mins on "Very High" in Intel Burn Test (Prime95 even on small FFT's is only getting me to 85°C for some reason)

I'm going to be reappyling paste tomorrow because I think I should be getting better temps from my NH-D14 that I just installed with Arctic Silver 5...perhaps I used too much. Maybe I'll give the Noctua stuff a try. I see a lot of people recommending keeping it under 95°C, so I am looking to lower that. I've noted that lower temps are easily achieved with a lower voltage, but then I will occasionally BSOD.

I was wondering if anyone thought the voltage seemed a little excessive for such a conservative overclock. I can crank it up to 4.5 Ghz, 1.30 V, but then I'm hitting 100°C and that's near the shut-off point.

Also, what should I set the CPU Cache voltage as? The default on my Z87 Extreme4 is 1.23 V.
 
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Som3one

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Jun 13, 2013
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I guess that´s just another example for how and how much chips vary.

I´d say OC wise you got a slightly above average chip but temperature wise only average.
Which means your chip can OC pretty good regarding the needed voltage but also produces quite some heat.

For example, I´d grade my chip bad in every way. I need above 1.3V to get to 4.3GHz with which I would also end up in the 95°C range.

You however, could end up lucky and being able to handle the heat if you decide to go liquid cooling or something like that.



Hm...all that didn´t really answer your question though,huh? ;)
As for the temps: As far as I know Haswell throttles at 105°C.
So, you are below that. However most overclockers seem to suggest not to go over 85°C-90°C when running stress tests so it will leave you with enough headroom while running day to day applications.
 
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md1032

md1032

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Your post was indeed helpful because it gave me some perspective on where my chip falls. I guess the variability is higher than I imagined. I wish Intel had soldered the heat spreaders on this chip.

I reapplied thermal paste using a smaller amount and was successful in lowering the temperature a few degrees after a few sustained minutes of Intel Burn Test on Very High. Overall, I am happy with the overclock so I will probably roll with it for now and research better thermal paste application methods and perhaps a better thermal paste. Apparently you do not actually need to cover the entire top of the CPU's head spreader...this is not something I was aware of. I'm really not liking the amount of "art" involved in the whole thermal paste application thing to be honest, but, it is what it is. This is still way, way better than the stock cooler could do.

One more question: What should the CPU cache voltage be set to? The same as the core voltage?
 
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chrysalis

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Aug 15, 2003
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guys thoughts on this, a complete newbie to haswell overclocking, I watched an asus vid and did this.

Set adaptive voltage to +0.05. (meaning idle voltage isnt bumped, only when in turbo).
Set turbo multipler to 43, was gonna do 42 but thought sod it.
Not only is it stable but temps have barely moved :) cpuz reports when at 4.3ghz the voltage is at about 1.15v.

My ram is also at XMP which is ddr3-1600.

idle temps 22C load temps under 100% (not stress testing) about 30-32C.
 
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RudyW

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Apr 6, 2014
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It is good voltage for that overclock and you don´t need to go higher, because it is more than enough for all games.
Btw I have the same OC: i5 4670K with 4,4 ghz - 1.213v (max temp 61c)
 
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alfredolopezmx

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Apr 2, 2014
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Guys I got an excellent chip, it just need 1.210 Vcore to get 4.5ghz. I already passed Linx 0.6.4 and doesnt crash at all. 3 months and no crash. And I play Prepar3d (FSX). Although my temps are kind of high with 212 EVO ... It reach 80°C max
 
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Dreetjeh

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Feb 9, 2015
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This setup I have too.
Asus z87 and i5 4670k
G skill sniper 8GB
Aircooler from mugen, no. 3 I think

It runs at 45 with 1.2 fix voltage and temps max out at 73C with aida64, fps or fpu it was I think.
Input voltage at 1.8
Memory I have set to 1.6 and 2000Mhz 9-10-9-28-1
Graphics to 34 with voltage 1.2 (1700Mhz)

It is stable for about 8-9 months now (not a single blue screen).
Maybe I will look for some graphic card I near future for my son :)

Can get to 4.7 at 1.26 and max temp 92C but not stable 100%, sometimes won`t boot, tested with aida64
To be on the save side I keep it at 45

In everyday life the temps never pass ~55C
Besides the latest minecraft (client and server same time) for my sun I do not run other games on this but do some photo editing and little video.
Must say i`m very pleased how this rig performs.
 
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