Hello guys, I currently have outdated pc, and I'm planing on changing the whole platform this summer, but now I'm in opportunity to get new GPU. I can't decide whether I should buy 7970 or gtx 670 since I'm planing to play future games on 1080p, and what I really wanted to ask you is: should I buy one of those cards or is it smarter to wait for the new generation of cards or even new platform ?? Im planing on buying one of these: ASUS GeForce GTX 670 Direct CU II TOP 2 GB Gainward GeForce GTX 670 Phantom Sapphire HD 7970 Vapor-X Last question: In the case I would buy one of those cards, I would have it on my current configuration which has Cheiftec 550 W PSU, it's 5 years old. Do you think that something can go wrong especially if I use 7970 which uses more power then 670?