definitely get the 2gb card, skyrim with high res texture pack uses more than 1gb vram at 1080p res. Skyrim also runs better on intel i5/i7 cpu's than any of the amd's, the better amd cpus for this game are 6300 and 8350. consider the 7950, or gtx760 also which are often similar price to the 660ti but faster, depending on deals and specials etc.