New build PC for Guild Wars 2.

DaiToBu

Honorable
Jul 25, 2012
22
0
10,510
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($114.99 @ Newegg)
Memory: Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory ($89.99 @ Newegg)
Video Card: VisionTek Radeon HD 7850 2GB Video Card ($219.99 @ Newegg)
Power Supply: PC Power & Cooling 500W ATX12V Power Supply ($55.98 @ NCIX US)
Total: $670.94

I am planning to build this PC for Guild Wars 2, movies, etc. The reason I am picking the 500 watt PSU just because I don't want any left over power being unused. I don't plan to overclock my computer, so I don't add any extra cooling fan. I want this PC to last for a few year, so I want to ask should I get a better CPU, Video card, etc. Is it worth for it money. I don't add hard drive and others part of the PC, because we already have it.