Hey guys. I've bought two 7970s in the past month, and both have had some defect. So now I am looking at the gtx 770 as a gpu, and would like your guys' opinion on two things. One, is it worth it to get the 4gb version? I play Skyrim heavily modded w/ texture packs, so I'm thinking yes. Also, which version of the 770 do you think is best? Thanks all.