Going to OC my CPU and undervolt GPU

Minibiker · 5 May 2020 at 12:54

Hi all

As the title says, I'm going to OC my CPU and Undervolt my GPU, what is the best way to test stability and benchmark the system, I was using Heaven benchmark but wondered if there's a better one to use?

How long do you test everything once it's all stable?

Cheers

Minibiker · 6 May 2020 at 17:25

Undervolted the GPU down little notches at a time all seemed stable at 940mv, went through benches and few games of fifa no issues at all, fired up PUBG today and it crashed (black screen) so I upped the voltage to 950 and same again, after about 15 mins of PUBG (black screens)

Any thoughts on this guys?

Minibiker · 6 May 2020 at 19:12

Ross Thomson said:
increase voltage or decrease clocks

I've took it up a few.. Its just because wherever I read most people get it stable at 930mv but I'm guessing all cards are different

Minibiker · 6 May 2020 at 20:20

Meddling-Monk said:
I'm afraid that's true of all equipment. I have a 4930k that loves low volts, but as it is fully loaded (all 8 banks of RAM, which most people don't have with their system), the commonly provided advice goes out the window. Now to use 4.3Ghz, I need more volts to the CPU, 1.28v instead of 1.13v at 4.2Ghz, and needing 1.38v for 4.5Ghz. Whilst most say 1.3v for 4.5Ghz. Overclocking nowadays is finding what your equipment can handle, any suggestions should be taken as that only; a suggestion. A place to start. But not necessarily something that can be replicated on your setup.

Anyway, it sounds like you're on your way to getting it stable, it'll take a bit more time, but once you do, cool, quiet and fully powered.

I guess it's just a case of keep knocking it up until it's stable in games and benchmarks.. Can I only go up 10mv at a time or can you go smaller

Minibiker · 6 May 2020 at 20:59

Meddling-Monk said:
Typically, I do an "averaging" setup process; So if you're at 930mv, I up a bit more (in chunks of x2 or x4 of the lowest amount, so 10mv or 20mv if the lowest step is 5mv, or two steps forward, one step back), and then see if stable or not. And if tested OK, then reduce by half (the step back) and test again. And keep going as required. Since going by smaller amounts will take a LOT longer to narrow down the stable point. You want steps to be able to easily and quickly narrow down too. Who knows? You might have an actual Golden Sample (or a really bad sample) of something and the volts needed are silly low (or silly high), and if you took it by the smallest steps all the time, you'd have a LONG(ER) time getting there before you even get to test it for stability.

But no, nothing stopping you from taking smaller steps towards your target if you should so desire.

I understand Cheers bud... I'll try upping another 10 see if that helps it, if not just keep climbing, stock voltage was 1024mv