Hmmmm, I see. Yea I can only spend around the 100$ range for now until I upgrade my whole system in 5 months. So I had just the graphic card in mind for an upgrade. But, maybe my psu is not good enough for the 260.
I'm not sure that the psu contributed to my 8600gts burn out though. It's a pretty week card and doesn't need a big psu. I had it for 3 years and when i over clocked it last month i got the blue screen of death and now it makes a buzzing sound and the screen is distorted, even after changing drivers and such.
Are you sure that I need to get a 650w for those cards? I looked at the requirements and it says a 500w for the 260. If you are right can you recommend a different card that requires less power?