So here's an interesting one:
Noticed some weird texture flickering / problems with lighting in games a little while back and now I am getting the following problem in multiple games, card is an MSI GTX 660:
Here's what I have tried all with no help:
Cleaned out drivers, updated to two different versions.
Completely formatted my SSD and tried with a fresh build of Windows.
Monitored temps with three different programs, at idle the card sits around 29 and at full load the highest I have seen it get is 66 with full ultra settings.
Monitored voltage, never fluctuated.
Pulled the card from my motherboard, reset it.
Used a different DVI cable
Tried a different 6 pin connector off my PSU.
Ran EVGA precision to test for artifacts, found none.
The weird part is that every time it happens, a single red dot appears in the same spot every time on my task bar. I can get this red dot to disappear by switching back to Windows 7 basic in the personalize screen. Most of the time I can also get the artifacting in game to disappear by either alt-tabbing or by switching all the settings from high/ultra to low and back again. So far I have had no computer crashes and I can still play games normally for hours even with the weird issues.
I'm planning to just RMA the card on Monday for the hell of it, was just curious if anyone had ever come across a similar issue.