ITS ARTIFACTS!!!!!!!!!!!!!!!!!!!
Ive been overclocking pc's and graphics cards for years!
Its 100% a heat issue caused by the card running at excessive temperatures. You get this mainly from overclocking but not nessessarily. Check your video card temps in the nvidia options. If its any more than 60 degrees C on full load, your gunna get artifacts on that card.
Things to do ( assuming its not overclocked in any way)
1. Check what temperature its running on full load
2. If the temperatures are high, remove the card, and check for dust inside the fan and heatsink on the card.
3. Remove any dust with a can of compressed air, about £5 from pc world.
4. Check other cooling in your PC, as MSI cards have notoriously crap cooling you may need to angle extra fans towards it
5. If all else fails, its essentially fooked!!
Finally, why did you buy a new card thats only direct X 9 compliant? When DX10 is out in january! When Crisis comes out next year youll be sorry!