I'm having pretty bad graphics issues with Skyrim on PC. There is severe graphics "tearing" on a lot of objects and characters. It comes up randomly and usually I can get rid of it by closing the game and restarting it. It always comes back up though, and I already have my CPU overclocked. Is this an issue with my graphics card (it's a little old) or CPU/memory? I am getting a new quad core CPU and 4 GB of memory and I am hoping that those will take care of these issues.
I have attached screenshots of the issues I am seeing. The third screenshot is a crazy discoloration problem that I see every once in a while.
http://i.imgur.com/XiGuR.jpg
http://i.imgur.com/0n7VQ.jpg
http://i.imgur.com/NhWIn.jpg
http://i.imgur.com/RQfI6.jpg
Thanks for any help.
Computer specs:
AMD Athlon 64 X2 4600+ Dual Core - 2.6 GHZ (overclocked)
2GB RAM
NVIDIA 7900 GTX 512 MB Memory


can anyone recommend a good $100-150 graphics card?