4.5ghz OC on 1.2540V i7 4790k

[ZandaThebigbluePanda]

soo I was doing some testing and it seems as if i have a stable OC of 4.5ghz on my 4790k.
I've just started to OC never done any CPU Ocing before I just wanted to know what you guys think of those numbers

 

[MeteorsRaining]

Looks fine to me. Do tell what is the OC @ 1.3V, should be around 4.7Ghz, give or take 100Mhz.

 

[ZandaThebigbluePanda]

Can't seem to OC higher than 4.6ghz. system freezes then crashes

 

[MeteorsRaining]

Increase the VCore in increments of 0.05V till you can safely boot. Then stress test, keep an eye on temps, shouldn't go over 80C, and don't go over 1.35V in VCore.

 

[ZandaThebigbluePanda]

The CPU was set at stock of 1.444v on the vcore, and i tried everything spent 2 hours messing with the voltage, never got a stable over clock above 4.6ghz

 

[MeteorsRaining]

Start from the basics, put the VCore on Auto, set the multiplier to 41, then boot, do a small stress test (10 min), then move the multiplier up by 1, then repeat, do this until it crashes, then put the VCore to 1.25V (assuming the Auto is not taking it too high), and repeat, if it isn't stable, increase it by 0.05V and do until it's stable. When you reach 4.6Ghz, stress test for an hour, then w/o increasing VCore, increase multiplier by 1 and boot, if it can't boot, increase VCore as explained, and you should reach 4.7Ghz stable with Vcore less than 1.35V.

How are the temps, what cooler and MoBo and RAM are you using?

 

[ZandaThebigbluePanda]

stress testing for the last 30mins with 4.6ghz OC on 1.2540v temps hover at 69-74C.
Mobo: Gigabyte gaming GT Z97X
Ram: kingston hyperX beast 2400Mhz
cooler: Thermal take nic c5

update: crashed after 37mins seems to be more stable at 4.6ghz and 1.2750

 

[MeteorsRaining]

Upto 80C is fine, are you stable with a lesser VCore? Like 1.25V or possibly 1.245V?

 

[ZandaThebigbluePanda]

5mins stress test on 4.6ghz at 1.25v seems alot more stable ended up crashing on 1.275v after a 5 mins test

 

[MeteorsRaining]

That's what I was talking about, the lowest stable VCore for a particular OC is the best VCore for that OC in every aspect. Try lowering it further, to acceptable limits. Like 1.24V, then move the multiplier up, the goal is not to reach 4.7, it's to reach that OC with the lowest possible stable VCore for best temps.

 

[ZandaThebigbluePanda]

lowest i could go was 1.25v anything under seemed to crash at windows load

 

[MeteorsRaining]

Ok, now increase the multiplier and try upping the VCore in increments of 0.05V to get the lowest stable VCore, repeat the process we just did for 4.6Ghz.

 

[ZandaThebigbluePanda]

Thanks for the help, For my needs 4.6ghz will be fine, even 4.5 was good. but atm I'm happy with 4.6, temps are way way lower than they were when i left the vcore at auto, my temps were avg 85ish and maxing out at 97 before it slowed

 

[MeteorsRaining]

I see, no worries glad to help

 

[ZandaThebigbluePanda]

just a small update, i was able to get the card stable at 1.2440v
with a 4.6ghz OC ran a 7 hour stress test hotest it got was 83C, back when i had it at stock it ran at 4.4ghz and hit 95C within 7mins of the test running. ended up crashing at stock with a temp of 97C

 

[MeteorsRaining]

You Mean chip not card right? And that's fine voltage and temps.

 

[ZandaThebigbluePanda]

yea chip, sorry... was on OC.net seeing if my 980 OCed as well as some others