XFX DD 7950 - Inexplicable performance drop

GegTheGreat

Honorable
Jan 27, 2014
5
0
10,510
Hello there,
Back in November of last year I completed my first PC build. Everything worked fine and has maintained the performance I'd expect based on the specs. However I have begun to experience some crippling performance issues, including frame rates 20-30fps lower than I am used to as well as intermittent stuttering which makes gaming more than impossible. I should add that I did slightly overclock the card recently which resulting in the driver crashing but I could not say for sure that it was the cause as it was done through the AMD catalyst software and I continued to get decent frame rates after

I have tried resetting my BIOS today which seem to resolve the issue temporarily (I think) but it did not take long for the above issues to reoccur. I also updated my drivers, which was to no avail.

I have attached an image showing a Metro Last Light benchmark I ran in late November contrasted with one I ran just minutes ago with identical settings.

PC Specs:
Intel Core i5-4670k @ 3.40GHz
G.skill RipjawsX 4GB DDR3 1600MHz
XFX AMD Radeon HD 7950 DD 3GB GDDR5
Asus Z87-K Motherboard
Corsair GS 600W ATX/EPS 80 PLUS Bronze Power Supply

Metro: Last Light Benchmark:
http://i.imgur.com/UStuc1J.jpg

 
What is the temperature of the card under load? Could it be that your cooling device on the card has become clogged over time, you are adding extra heat from overclocking the card, and as a result, your graphics chip is throttling under load?

Perhaps you should run a utility such as GPU-Z and monitor the card's behavior over time, when loaded, and see what the GPU clock is doing, whether maintaining it's highest rate or dropping back.

GPU-Z can be found here: http://www.techpowerup.com/gpuz/
 

GegTheGreat

Honorable
Jan 27, 2014
5
0
10,510


Followed your instructions and ran the Metro benchmark 5 times whilst GPU-z was monitoring the cards behaviour.

The log shows that the card is maintaining a temperature of 65 degrees (which is a normal load temp right?) with a little fluctuation give or take. GPU load floats around between 50% and 78%. GPU clock remained stable at 800MHz as did the memory clock at 1250MHz and the fan speed never went above 40%

So a problem with cooling is unlikely?
 

GegTheGreat

Honorable
Jan 27, 2014
5
0
10,510




CPU usage stands at 2-6% these are the programs I usually have running in the background whilst gaming.

Could the issue just be a hardware fault with the GPU? Starting to think that way.

http://i.imgur.com/WBOOlJF.jpg