At the moment I'm trying to find out if I want the Gigabyte AMD Radeon HD 7950 or the GTX 660 Ti FTW. I think the 660 Ti FTW one uses less power. Do i need a bigger PSU if I try to get the 7850? (I was gonna get a 650w PSU) Is the 7850 better in any way than the 660 Ti FTW?
They both are the same price BTW, and I can't afford a graphics card any higher than how much they are, 300 dollars.
Your post is a little unclear about which powersupply you have: Can you please clarify?
You might also want to look for the 'Tahiti LE' based HD7870, it's not far off the full HD7950 in performance and a fair bit cheaper.
@ SuperPaperFan: Do n't worry about capacitor ageing, that PSU will be going strong for years to come.
Take your pick-660Ti or HD7950, they're both great performers, although I'd probably opt for a 660Ti, despite the fact I run a HD7950 in my rig. From my own experience, that Techreport article/review is spot on about the frame latency.
EDIT: EVGA have a superb reputation for warranty length and customer support, guess where MY money would go .
For 1080p the 660 ti is a good choice, it will run any game at high settings with a good amount of fps, overall a good gaming experience, and it's cheaper.
There's benchmarks out there showing that it can deliver 60 fps on BF3.