Guide/advice for undervolting 3090

Gtiracer · 16 Feb 2021 at 08:58

Not sure if right forum for this but it's hunting for a extra performance so I thought I'd start here. My card gets under 18k in timespy and it's a Suprim x. I was hoping for a little more given that most 3080s can achieve this score.

Has anyone got any advice re undervolting on how to go about it or good video guides that go through the best way to get performance out of the card or tweaks I can do/try.

I do plan to watercool it but haven't got the spare ££ for the waterblock at the second

Gtiracer · 17 Feb 2021 at 00:39

Thanks. Processor is a 3700x

Gtiracer · 17 Feb 2021 at 18:17

Thanks for your reply.

My clocks seem ok, but I think the CPU may be limiting me, also I know I'm running in PCIe 3.0 x8 instead of x16 because both my m.2 slots are filled.

Here is my highest timespy so far

https://www.3dmark.com/3dm/58220775

Gtiracer · 17 Feb 2021 at 18:25

I've been using clocktuner for Ryzen but only just found out it's only boosting to 4.11 GHz for some reason, I think there is definitely an error somewhere. I'm going to disable it, use PBO instead and see if my result changes

Gtiracer · 18 Feb 2021 at 14:03

TT158 said:
Graphics score of 21k is bang on. She's a beautiful, healthy specimen

It does seem like CPU might beholding it back a little. Perhaps revert CPU to totally stock and see what happens

Yes your eboth right, I was looking at the overall score, not the separate scores, so I ma happy with the 3090 performance then, it's something limiting with my cpu for now that I have to investigate. It's watercooled so it doesn't have any problems with temps

Gtiracer · 19 Feb 2021 at 00:38

tyke_ said:
Hi there, both of my m.2 slots are filled, does that mean I'm running PCIe 3.0 × 8 instead of x 16 too? My mobo is asus prime z270k which supports PCIe 3.0 x 16.

EDIT : just ran timespy benchmark, here's what i got -

Your cpu score is what's lowering your overall score like me, I'm not sure what a 7700k would normally get, but the benchmark charts in the timespy thread should give you a rough idea of what other people with the same cpu are getting so you can compare.

It was cpu-z that told me what mode my PCIe was running in and it's certainly possible for yours to be as well, but your gpu score, although lower than mine is not bad, was your card standard or overclocked for the benchmark run?

Gtiracer · 19 Feb 2021 at 13:36

tyke_ said:
Yeah my cpu is 4 years old now, i will take a look at the timespy thread to compare and check out gpu-z to see PCIe mode. My zotac gpu isn't overclocked, in fact it can't be clocked unless another bios is flashed to it, its power limit is locked. Its 1 of the crappier 3090s tbh lol. I'm on the lookout for a suprim, they're a beast amongst 3090s.

Sorry to hear that I didn't know that about the zotacs (I almost got one myself) Mine will be up for sale if I can get hold of a strix 3080