Okay, so I have 2 rigs right now and I want to sell one. There's no reason for me to keep em' both. I gotta pick one because I have to transfer my water cooler to one of them. On one side I have an AMD Phenom 9550/M2N32-SLI and the other one is what I have posted now. Other than that everything is the same with a few minor parts. Which do I sell?

I purchased a BFG GTX 260 a couple weeks back, installed the latest nvidia drivers on it, but no matter what I overclock it to it doesn't hold up good. I have a 8800GTS in another computer with the same driver release and nvidia's system tools automatically overclocked it for me. What's my best solution?