is this a good set up? http://www.cyberpowerpc.com/saved/1DCW2C
idk if i should buy from there or just buy part by parts and put it together but thats gonna take a lot of time since its gonna be my first time.
and should i buy nvidia geforce gtx 550 or amd radeon hd 6850?
im looking to play guild wars 2 when it comes out
Building is better rather than just buying the whole thing at once. The time taken, will be worth spent. Go for a HD 6850. The GTX 550 Ti is slower than Radeon's 6850. Could you tell us your budget, so we can recommend you a good one.
I would strongly suggest that you take the opportunity to build your PC yourself. I know you are hesitant because you haven't done it before, but if you go to the system portion of the forums there are multiple guides and full PC-building guides that offer plenty of solid information. It will be significant cheaper if you go this route, and you will end up with a much better PC that is a lot easier to upgrade and customize in the future.
That specific PC is strange in my mind, because it has a AMD fusion CPU with a 550 TI that you have added on. If you are adament on using cyberpower, at least find yourself a gaming CPU. Honestly, that case probably makes the computer look much better than it actually is. AFAIK, the AMD fusion CPU's are not intended for gaming, and you will be dissapointed by the performance.