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4790k Overclock

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snips86x
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4790k Overclock

Post #1 by snips86x » Fri Apr 24, 2015 8:41 pm

I've got a 4790k which I've been running at 4.7ghz on 1.235 vCore. It's perfectly stable and happy gaming, but when playing Hardline/BF4, at least one core is hitting 89-91c. I've changed the overclock to 4.5ghz & 1.2vCore and temps are down to about 78c now. However, I'd like to know which settings to change so I can increase the overclock but keep the temps down. I know the Gigabyte Gaming 5 Mx can have high stock voltages across the range, but I'm not sure what to change first.

Suggestions?


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Re: 4790k Overclock

Post #2 by ObscureParadox » Fri Apr 24, 2015 9:17 pm

snips86x wrote:I've got a 4790k which I've been running at 4.7ghz on 1.235 vCore. It's perfectly stable and happy gaming, but when playing Hardline/BF4, at least one core is hitting 89-91c. I've changed the overclock to 4.5ghz & 1.2vCore and temps are down to about 78c now. However, I'd like to know which settings to change so I can increase the overclock but keep the temps down. I know the Gigabyte Gaming 5 Mx can have high stock voltages across the range, but I'm not sure what to change first.

Suggestions?


For my old 4790K a lot of the voltages could be lower than stock, how much this will actually effect your temps though I'm not sure, it'll also depend on what speed you have your cache at.

System Agent volts 0.9v
VCCIN or input volts 1.7v

Those are the only two I can think of that'll make a massive difference with your temps, even then it might do nothing.
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Re: 4790k Overclock

Post #3 by Arne Saknussemm » Fri Apr 24, 2015 9:54 pm

Yeah, temps pretty much come from core voltage/current so not much you can do...unfortunately there is no magic formula for other voltages that will make much difference.

Best thing to look at is how you OC...I presume you are using speedstep and adaptive voltage so the processor is able to downclock and downvolt which means lower temps overall...and fine tune...reducing voltage to just above the minimum necessary for stability...take control from the board because often the board will ladle on voltage when it's not necessary..

And of course make your cooling as efficient as you can...

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Re: 4790k Overclock

Post #4 by snips86x » Fri Apr 24, 2015 10:13 pm

Thanks for the replies :)

This was really an temp solution while I finish collecting parts for my custom loop!
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Re: 4790k Overclock

Post #5 by ObscureParadox » Fri Apr 24, 2015 10:23 pm

snips86x wrote:Thanks for the replies :)

This was really an temp solution while I finish collecting parts for my custom loop!


I think your best solution for now is to keep it below your max overclock. When you get the custom loop in, you may find that you're able to push the CPU higher anyway because of the lower temps of the CPU. Who knows you might even be able to get 5GHz if your loop and volts are good enough ;)
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Re: 4790k Overclock

Post #6 by TheMadDutchDude » Sat Apr 25, 2015 2:00 am

There's also the delidding option which will probably drop 15c off of your temperatures. :D
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Re: 4790k Overclock

Post #7 by setter » Sat Apr 25, 2015 2:31 am

Snips, are you on the latest bios for your board? Early versions overvolt awfully high, moreso pn gigabyte boards. If you use adaptive or offset voltage this can be increased. I'm on an older Asus Z87 board, yes it volted higher with devils canyon chips, but nowhere near as high as gigabyte boards did. My current 4790k isn't golden by any stretch, at stock it uses 1.200, 1.300 for 4.7ghz. Not worth delidding. 1.23 ono for 5ghz, id scalp it in a heartbeat. But I've only seen two or three 4790k's that will do this.
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Re: 4790k Overclock

Post #8 by snips86x » Sat Apr 25, 2015 6:52 am

setter wrote:Snips, are you on the latest bios for your board? Early versions overvolt awfully high, moreso pn gigabyte boards. If you use adaptive or offset voltage this can be increased. I'm on an older Asus Z87 board, yes it volted higher with devils canyon chips, but nowhere near as high as gigabyte boards did. My current 4790k isn't golden by any stretch, at stock it uses 1.200, 1.300 for 4.7ghz. Not worth delidding. 1.23 ono for 5ghz, id scalp it in a heartbeat. But I've only seen two or three 4790k's that will do this.


Hello Mate, I'm currently using BIOS F5D and while I've not tried to refine the vCore with my overclock I think I managed low 1.23's for 4.7ghz but not really tested to any extend. I may just drop the vCore to 1.20 for 4.5ghz and see what it does. Worst case is I need a reboot to up it slightly.
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Re: 4790k Overclock

Post #9 by snips86x » Sat Apr 25, 2015 5:10 pm

I've changed the vCore to Normal (1.1v) and offset to +0.020. Real Bench seems OK for a 5-10 min run, will try gaming later and see how it goes.
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Re: 4790k Overclock

Post #10 by snips86x » Sun Apr 26, 2015 7:06 am

Got it down to +0.05 :D

RealBench is happy for 15 mins, will see how Hardline/BF4 & Dying Light handle it later!

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Dying Light:

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There is already a difference of about 10c. I was playing this yesterday with offset @ +0.025 and it was hitting 77-80c with at least 1 core breaching 80c. Very impressive to see this difference :D

BF Hardline:

*coming soon*

BF4:

*coming soon*
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Re: 4790k Overclock

Post #11 by setter » Sun Apr 26, 2015 7:37 am

Much better now, in mine at 4.7 on 1.300 vcore. I see anything from 60c to 75c when gaming. The lower temps happening if I run an fps limit as my two non ref 780's dump a shedload of heat into the case if running maxed out.
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Re: 4790k Overclock

Post #12 by snips86x » Sun Apr 26, 2015 7:48 am

setter wrote:Much better now, in mine at 4.7 on 1.300 vcore. I see anything from 60c to 75c when gaming. The lower temps happening if I run an fps limit as my two non ref 780's dump a shedload of heat into the case if running maxed out.


My Titans are the same and can't wait to get them under water! I'm so surprised that at v1.1, I'm able to get 4.5ghz!! Didn't expect that at all!
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Re: 4790k Overclock

Post #13 by setter » Sun Apr 26, 2015 7:54 am

Blower coolers on the titans will be more efficient at shifting air out of the case compared to the wf models. But still I suppose some heat will remain in the case. Both 4790k's I've owned were around 1.200v at stock, but I was able to lower vcore a fair bit on each and still be able to boot into windows ok. Never tried any oc's though.
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Re: 4790k Overclock

Post #14 by snips86x » Sun Apr 26, 2015 7:59 am

setter wrote:Blower coolers on the titans will be more efficient at shifting air out of the case compared to the wf models. But still I suppose some heat will remain in the case. Both 4790k's I've owned were around 1.200v at stock, but I was able to lower vcore a fair bit on each and still be able to boot into windows ok. Never tried any oc's though.


Is RealBench enough to test the stability?

I was kind of hoping to amend the overclock/vCore and do a quick blast of RB instead of jumping into game!
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Re: 4790k Overclock

Post #15 by Arne Saknussemm » Sun Apr 26, 2015 8:03 am

RealBench is a pretty good stress test....I don't think I've had an OC pass it and fail on something else yet...

Nice progress you made :D

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Re: 4790k Overclock

Post #16 by setter » Sun Apr 26, 2015 8:05 am

Real bench is what my current oc was stress tested with. 5 passes of the benchmark and it has handled everything I've thrown at it for months. Gaming, bit of encoding and running various benchmarks, Intel xtu, heaven, valley, the various futuremark benches to name a few. Did recently try 4.8 but blue screened in games with 0x101 so needs a touch more vcore.
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Re: 4790k Overclock

Post #17 by whyscotty » Sun Apr 26, 2015 8:24 am

As above - Real bench then good to go :D
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Re: 4790k Overclock

Post #18 by Hivizman » Sun Apr 26, 2015 9:24 am

Realbench is one of the best stability tests, if not the best currently. Simply because it is a real world application. When Nodens designed the code it was aimed at using applications that are current and are most likely to trip your OC up.
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Re: 4790k Overclock

Post #19 by snips86x » Sun Apr 26, 2015 9:29 am

Hivizman wrote:Realbench is one of the best stability tests, if not the best currently. Simply because it is a real world application. When Nodens designed the code it was aimed at using applications that are current and are most likely to trip your OC up.


That's good to know, thanks :) Will keep using it then!
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Re: 4790k Overclock

Post #20 by snips86x » Sun Apr 26, 2015 3:10 pm

Quick Update:

Keeping the vCore @ Normal (v1.1) and the offset to +0.05, I've managed to push the overclock to 4.7ghz, no problem and RealBench seems happy. Temps are low 90c however!
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Re: 4790k Overclock

Post #21 by setter » Sun Apr 26, 2015 4:17 pm

What are you using for cooling snips? 90c seems very high for such a low vcore, on 1.300 mine was hitting 83c max in real bench at 4.7.
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Re: 4790k Overclock

Post #22 by snips86x » Sun Apr 26, 2015 4:25 pm

setter wrote:What are you using for cooling snips? 90c seems very high for such a low vcore, on 1.300 mine was hitting 83c max in real bench at 4.7.


H100i but it's only a bench! Gaming brings it to high 70s!
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Re: 4790k Overclock

Post #23 by Hivizman » Sun Apr 26, 2015 4:52 pm

I would check the mounting of your cooler. Just to be sure.
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Re: 4790k Overclock

Post #24 by snips86x » Sun Apr 26, 2015 4:54 pm

Hivizman wrote:I would check the mounting of your cooler. Just to be sure.


Checked it twice when I built into a new case, it's solid and ain't moving!
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Re: 4790k Overclock

Post #25 by snips86x » Mon Apr 27, 2015 9:03 pm

offset down to +0.02 @ 4.7ghz, stable with Dying Light :D
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