[SOLVED] My GPU is slower after overclock

[pepato84]

I overclocked my gpu a week ago and it went very well. I have ASUS STRIX GTX 970 DirectCU II OC and i overclocked it to +172 base clock +350 Memory clocked Power limit 110% and core voltage was on stock.

It performed well, 58% on userbenchark but now i can't exceed 49%.
I
have a 500w PSU and run i7 3770 with stock speed.

I still run it on same speed but now it runs slower. Does anyone know the cause?

 

[Karadjgne]

My OC on my Asus Strix GTX970 DC2 OC (not the more common DC20 OC) was gpu:1294 mem:1992 PL:114% v:stock.
Seasonic M12-II 520w.

That's about as good as it can get.

What was wierd was I couldn't get the card stable at all at PL 110-113% or 115%. It only liked 114%, even when just adjusting that and leaving clocks alone.

Much of your stability will be directly related to the psu. Gpus have decent VRM's, but they aren't awesome at removing psu ripple from the pcie, only decent, so if your psu (it's a 500w and there weren't any really good 500w psus) is sorta craptastic with ripple on its 12v rail, you'll not get a good high stable OC, maybe just a decent one.

The Samsung vram is really high quality, but it's extremely unlikely you'll get over 2000MHz, that was the Golden Milestone back then and wasn't surpassed until the 980ti.

Gpu Boost is usually the culprit for dropped clocks, and that'll kick in if the card doesn't like the temps. Most likely you ran the original test with a somewhat cold pc, and later tests were done at a higher ambient, higher case temps. Gpu won't boost as high.

 

[pepato84]

So the main cause is PSU? It really performed well for bout a week. Now it’s just slower with the same OC speed. OC is very stable

 

[Karadjgne]

Possibly. More likely it's an airflow issue, you did the first test that got 58% on userbenchmark with a still cool pc, but a week later you gamed, room is hotter, dust filter is dirtier, case temps are higher, something different, so the gpu isn't boosting as high because it's running hotter.

Or might simply be that it's userbenchmark, which takes a 100 similar pc builds comparison and several ppl have added higher scores, which puts you further down the list.

 

[pepato84]

Nah, i have good airflow, max temp is 70° on 100% usage, that’s why it is rly weird for me :/

 

[Karadjgne]

That's not too shabby actually. But I would look into if there's been updates or fixes. Seems like every time a game gets half a dozen bugs fixed, a full dozen more issues pop up.