Will low voltages decrease overall performance in current overclock speed? Skylake Workstation Stability

[Daniel_r17]

Hey all, new to overclocking. Was wondering if utilizing the most minimal voltage required for the cpu overclock would decrease performance in a 3d rendering applications or Photoshop etc. I want to make sure my system is stable in the long term while giving fast single core performance.

Currently from tests I found that there was diminishing returns as the overclock went higher. Also there were more problems than I cared to deal with. I have two "profiles" that I found to be stable.

I'm using 6700k with a z170x gigabyte ud5 motherboard using offset voltage. Gigabyte motherboards don't have adaptive from what I can see. 32 gb ram 2400 mhz clock speed. Only have a hyper evo 212 at the moment but I will be upgrading soon.

4.6ghz
Bios 1.332 Vcore
Cpu Vcore 1.3v
DVID(dynamic offset voltage) +.03
LLC Standard
XMP

Voltages on load went anywhere from 1.324 to 1.366 and occasionally 1.38 under highest stress. Are these voltages safe? The temperature never really goes past 72 C but i'm honestly worried about stability. I got random crashes every once in a while. Maybe associated with vdrop. If I use High llc the voltages spike to 1.4 to 1.41. Pretty sure cooling could be an issue but the hyper evo 212 is pretty darn good for it's price



4.5ghz
Bios 1.248 Vcore
Dvid (dynamic offset voltage) -0.060 V
LLC Standard
XMP

The vcore on load for this profile never went above 1.29v on average, occasionally spiking to 1.320v. The temperatures I was really happy with. Never going past 64 C with an average of 53 C.

So far I think i'm going to go with this setting but I wasn't sure if I was giving it enough "juice" and that it would perform less at this voltage.

Its the most stable under stress tests and renders. Also dont think I can tell a difference between 4.5 and 4.6 ghz single core performance in 3d modelling applications as well as photoshop. Feel like 4.5 is already fast enough. The results it was not that much worse for renders.

Maybe ram speed makes a difference?


Would greatly appreciate some feedback. Sorry for the long wall of text hah.

 

[mrfungi]

4.5ghz @1.248v with the occassional spike to 1.320v sounds good to me. Shame there's no override function for the voltage though! Temps sound really good. Is this with Aida64 tests as well?

It'll come down more to how you feel and everything is stable after OC with XMP on, running tests playing games etc. That is, for example, when I was overclocking and found a stable voltage after stress tests etc it somehow didn't feel exactly right for me. Could've all been in my head, but I increased the Vcore voltage up slightly, then the Uncore voltage down slightly, and it felt better for me.

In regards to your RAM, whereas it has a very very minor influence in this context, it's certainly nothing to worry about and IMO would leave it at the XMP profile and get on with things. If its running well as its intended, that is, at its memory clocks, speed and voltage, then its all good. I've tinkered with mine, Corsair Vengeance Pro 2x8gb 1866mhz @1.5v and to be honest I didn't notice a difference from the changes I made compared to the XMP profile.

That's just me though, you may like it differently