I plan on finally upgrading my graphics card and I want to buy a GTX 560 Ti. I was looking at the cards from EVGA at my local computer store and I am a bit confused on which one to pick. There is one model that has 1 GB of vram, and is clocked at 900, and the other one has 2 GBs of vram, but is clocked at the lower speed of 822. I plan on playing at 1080p resolution on my 32" TV. Which one would you recommend? Does the slightly slower clock speed make much of a difference, and will I even notice a difference with the extra GB of vram?