I came across a deal through a friend where I can get a gtx 580 1.5gb (evga SC) for $300, still in package. To me this seems like too good of a deal to pass up, but I just bought a 6870 when it first came out and spent close to $300 on that (with shipping and tax). I think I can get close to $150 or so for the used 6870, so the question is this: is it worth the $150 it will cost me to upgrade to the gtx 580? Thanks
system info: monitor-1920x1200
2500k, 8g ram, P67-UD3
How happy are you with your current graphics performance?
If you want more, then the GTX580 is a great deal.
You could probably make money on the deal selling the GTX580 for >$400 on e-bay.
But, realize that there will be diminishing returns as you get closer to top end configurations.