HIGH overclock with LOW voltage

[Light-Yagami]

Hi guys.

 

I've had my 6700k for a while now and having AIO liquid cooler, it runs quite cool on it's 4.5 ghz overclock. I've had it on 1.32v for a long time. Never thought It could run lower than that, until I saw a post on forum, some guy got his 4770k runing on like 4.2ghz on some crazy low voltage and I tried lowering mine as far as it would go without crashing while runing AIDA 64, Unigine Heaven 4.0 and Cinebench R15 at the same time for long periods of time. I got it to run at 1.200v at 4.5ghz without crashing while runing all of the mentioned programs and AC syndicate on top of it. Sure, everything was lagging as hell but it's was stable. 

 

Do you think this is silicon lotery? Is it a good voltage to ghz ratio? It never runs above 60C on Neptun 240M with fans at 50%. (stock fans will be changed to aftermarket EK-Vardar F3-120s)

Share your OC settings, I would love to hear them

 

[Verrierr]

I'm pretty sure starving your silicone could damage it in the long run. I wouldn't advise keeping it at those settings.

[mpsparrow]

Overclock it more then.

[Light-Yagami]

2 minutes ago, Verrierr said:

I'm pretty sure starving your silicone could damage it in the long run. I wouldn't advise keeping it at those settings.

It runs stable at 1.190v, I gave it some more just to be sure. Do you think that's okay?

[MoraisGT]

9 minutes ago, Light-Yagami said:

It runs stable at 1.190v, I gave it some more just to be sure. Do you think that's okay?

If it runs stable at 1.19v then keep it at that...

There's no such thing as starving silicon, it's wither stable or not stable.

[Light-Yagami]

1 minute ago, MoraisGT said:

If it runs stable at 1.19v then keep it at that.....there's no harm at all.

There's instant bluescreen at 1.18 and 1.19 is just above that.. So I'm keeping it at 1.2v for a good measure.. I don't want it to decide to sip a little more once and die when I'm doing something important.

[MoraisGT]

If you get an instant BSOD with 1.18, I doubt it's completely stable at 1.2.

Try running the Rog RealBench benchmark.

[racer243l]

Damn, I now feel very bad with my 1.344v for 4,6Ghz 6700k

[MoraisGT]

2 minutes ago, racer243l said:

Damn, I now feel very bad with my 1.344v for 4,6Ghz 6700k

Luck of the draw

 

I had a 3570k that would not do 4.7GHz with less than 1.4v, now I have a 3930K that runs Cinebench at 5.1GHz with the same voltagem

[Light-Yagami]

2 minutes ago, racer243l said:

Damn, I now feel very bad with my 1.344v for 4,6Ghz 6700k

There's a big voltage increase between 4.5 and 4.6ghz. But yeah, Ich bin mit den Ergebnissen sehr zufrieden hahah

[racer243l]

2 minutes ago, MoraisGT said:

Luck of the draw

 

I had a 3570k that would not do 4.7GHz with less than 1.4v, now I have a 3930K that runs Cinebench at 5.1GHz with the same voltagem

Hah, true

Had a 3570k myself but sadly never pushed it beyond 4Ghz

1 minute ago, Light-Yagami said:

There's a big voltage increase between 4.5 and 4.6ghz. But yeah, Ich bin mit den Ergebnissen sehr zufrieden hahah

True, never really tried anything else then hitting 4,6Ghz. Probably I should Mit den Werten für 4,5Ghz wäre ich auch sehr zufrieden

[GER_T4IGA]

19 minutes ago, MoraisGT said:

Luck of the draw

 

I had a 3570k that would not do 4.7GHz with less than 1.4v, now I have a 3930K that runs Cinebench at 5.1GHz with the same voltagem

Tbh Cinebench is nothing. I can raise my clock from within os with Intel XTU and probably also do Cinebench at 1.4V but cinebench is not that powerhungry.
Prime95 is far from any realistic scenario but one thing is for damn sure. If you are stable in something as taxing as Prime you won't have problems anywhere else.
To put that in numbers: I bet your CPU runs at only 80% TDP or less in CInebench compared to Prime95, Linpack or something similar.

[MorganO]

25 minutes ago, MoraisGT said:

Luck of the draw

 

I had a 3570k that would not do 4.7GHz with less than 1.4v, now I have a 3930K that runs Cinebench at 5.1GHz with the same voltagem

what cooling

[MoraisGT]

1 hour ago, GER_T4IGA said:

Tbh Cinebench is nothing. I can raise my clock from within os with Intel XTU and probably also do Cinebench at 1.4V but cinebench is not that powerhungry.
Prime95 is far from any realistic scenario but one thing is for damn sure. If you are stable in something as taxing as Prime you won't have problems anywhere else.
To put that in numbers: I bet your CPU runs at only 80% TDP or less in CInebench compared to Prime95, Linpack or something similar.

It's not that Cinebench doesn't utilize the CPU at 100% (because it does), it's just that Prime95 uses other instructions (like AVX) that put a lot more strain on the CPU.

 

But personaly I don't use Prime to test for stability.

I use Rog RealBench and BF4 (it's just my way of doing it)

 

59 minutes ago, KOMTechAndGaming said:

what cooling

Custom WC.

[MorganO]

2 hours ago, MoraisGT said:

It's not that Cinebench doesn't utilize the CPU at 100% (because it does), it's just that Prime95 uses other instructions (like AVX) that put a lot more strain on the CPU.

 

But personaly I don't use Prime to test for stability.

I use Rog RealBench and BF4 (it's just my way of doing it)

 

Custom WC.

what voltage

 

[Loxa]

4 hours ago, Light-Yagami said:

Hi guys.

 

I've had my 6700k for a while now and having AIO liquid cooler, it runs quite cool on it's 4.5 ghz overclock. I've had it on 1.32v for a long time. Never thought It could run lower than that, until I saw a post on forum, some guy got his 4770k runing on like 4.2ghz on some crazy low voltage and I tried lowering mine as far as it would go without crashing while runing AIDA 64, Unigine Heaven 4.0 and Cinebench R15 at the same time for long periods of time. I got it to run at 1.200v at 4.5ghz without crashing while runing all of the mentioned programs and AC syndicate on top of it. Sure, everything was lagging as hell but it's was stable. 

 

Do you think this is silicon lotery? Is it a good voltage to ghz ratio? It never runs above 60C on Neptun 240M with fans at 50%. (stock fans will be changed to aftermarket EK-Vardar F3-120s)

Share your OC settings, I would love to hear them

 

There is always a sweet spot with every CPU, for example my 6700k runs 4.4Ghz @ 1.190v but to run 4.6Ghz needs 1.320v. For 24/7 use 1.350v is fine so if you prefer lower temps go with which ever OC is stable at the lowest voltage

4 hours ago, Verrierr said:

I'm pretty sure starving your silicone could damage it in the long run. I wouldn't advise keeping it at those settings.

LOL, these forums never fail to make me laugh

[MoraisGT]

16 hours ago, KOMTechAndGaming said:

what voltage

 

Like I said i takes 1.4V to run Cinebench at 5125MHz (41 Multi. + 125 Strap).

 

I never tested for full stability though.

[done12many2]

21 hours ago, Light-Yagami said:

I got it to run at 1.200v at 4.5ghz without crashing

 

This is more like a mild overclock / low voltage as 4.5 is not really high for a 6700k.

 

 

21 hours ago, Light-Yagami said:

Do you think this is silicon lotery? Is it a good voltage to ghz ratio?

 

Overclock it higher and we can let you know.

 

20 hours ago, MoraisGT said:

I use Rog RealBench and BF4 (it's just my way of doing it)

 

I like RealBench myself.  I try to use it and a couple other things just to make sure, but it's never failed me.