I bought a Sapphire 6870 DiRT 3 Flex Edition 2 weeks ago, and I am really impressed after having integrated Intel and never having a dedicated card... yeah.
However, I am having some driver/GPU trouble and I was wondering whether the tech experts here can help out!
I'll start off with Screen Artifacts. I was playing on DiRT3 and left my computer for about 5 minutes on the DiRT 3 menu screen to come back to the screen split in half, the left of the screen being on the right, and the right of the screen being on the left, with a black border in the middle. Disabling my display driver in device manager and re-enabling it fixed the problem. I have installed an additional cooling fan in my case at the back which does reduce the temperature inside the case by a significant amount. So I heard about this Furmark thing and tested it out yesterday, and boy did it stress the card. I watched the temperatures increase on GPU-Z. However, when the temperature hit around 75 degrees C, my screen split in half again, instantly. Again, disabling the drivers and re-enabling them fixed it.
Now I have uninstalled, cleaned with Driver Sweeper in safe mode and installed drivers numerous times, mainly the 11.9 AMD Catalyst drivers, and now I have the 11.11 Catalyst drivers. Something which might help towards the problem is that with the 11.11 drivers, on Need for Speed World in the native resolution on my VGA (using a DVI-VGA converter) there is a massive black border around the game. I read about this online and found out that NFSW sets the screen frequency to 59Hz and there is a black border when that is the case. I found a registry hack which forces 60Hz on NFSW, but on the 11.9 drivers 59Hz didn't have the black border around the game. Not sure if this is relevant to my artifacts problem.
So if you guys have any advice towards the problem I am having, it would be much appreciated! The card is practically new and isn't overclocked (core clock of 900Mhz currently).