Will increasing Core voltage remove artifacting?

[Tinkmaster Overspark]

Hey there,

currently i have a GTX 970 SLI setup (MSI Gaming for both models). They are running stable with no artifacting and not going above 80 degrees with the following settings:

Core Voltage - +0 mV
Power Limit - 110%
Core Clock - +175MHz
Memory Clock - +400MHz
Fan Speed - Still set to auto, haven't played with it

I'm still experimenting and i'm going to see if i can increase the memory clock further, even if it means pulling the core clock back a bit. On GPU-Z the Power Consumption wasn't going above 103% TDP on the first card (the one i was monitoring more closely due to higher temps)

If i give it more voltage in afterburner will the artifacting that occurs when i raise the core clock further (smoke starts flickering at +185MHz and proper artifacts all over the screen appear at +200MHz in FireStrike) go away allowing a higher overclock, or is this artifacting indicating the maximum i can push these cards?

 

[mamasan2000]

http://youtu.be/86wXT_XvIOM?list=UUXuqSBlHAE6Xw-yeJA0Tunw

Not sure if your card also has some autobalancing power rail.
But generally, memory overclock does very little compared to core OC.

For the voltage thing, test it yourself, just stay within safe limits on voltage and keep a check on your temps.

 

[chiptouz]

Interesting When I was oc'ing my gpu's I would only get artifacts when I pushed the gpu memory too far. I would get BSOD or video driver reboot when pushing the gpu too far. I would back off the memory until you had no artifacts.

 

[mamasan2000]

While still on the subject, Unigine Valley is an excellent benchmark for stability testing. 1 run is usually enough.

https://unigine.com/products/valley/


Avoid Furmark

http://www.tomshardware.co.uk/forum/275160-29-throttling

Last post.

 

[Tinkmaster Overspark]

Would you consider flickering smoke in fire mark and zero artifacting in unigine valley to be stable? As there's a point inbetween artifacting and no effects that causes smoke to flicker on fire mark but I see no problems elsewhere

 

[mamasan2000]

To be absolutely certain, I would try a few games as well.

When I run Valley, usually it just outright crashes if I have too high core clocks.

Flickering can have a few causes. Driver issue (noticed this a lot on Nvidia GTX760), engine bug etc. Harder to pinpoint while artifacting is a clear definitive issue of something wrong.