Chris 2180 :
I have the latest drivers and my temps seem normal, i actually just replaced this gpu about 4 months ago since the other 280 started getting artifacts , lol if this is another gpu problem i may just go back to console :/
That sucks, man. Who made the card (as in Asus, MSI, etc)? It is possible that they didn't actually replace it instead they repaired it or did what they thought was a repair unless it came in a brand new sealed box with a new serial number that is. What you describe is similar to what causes artifacts. If opening the win key didn't fix it then I would have guessed it was a cable or HDMI/DVI port problem. Although, you might want to try that anyway before sending it back. Try swapping in a known working cable or try a different cable like if you are using DVI, use DP or HDMI or D-Sub even - whatever your monitor or TV has. Or, try a different display even. But, unfortunately, it does sound like a video memory issue. If you do RMA it again, call them or start a live chat with them first and tell them that you want a brand new card not a refurbished one and not your old card repaired. I used to have a GTX 660 that decided to take a crap on me one day and it took me 3 RMAs before they finally sent me a brand new card. Actually, the first two they supposedly repaired it and then I decided to sell it while it still worked. It took a crap on the new owner's PC and I got Asus to replace it for him. The good part is, no matter what company it is, you shouldn't have to pay for shipping to them this time or any future RMAs for it. But, you are still being inconvenienced by not having a 280 and having to use the HD 4600 which sucks compared to it.