yes, if you want an xfx the 550w is what you want .
Price breakdown by merchant: http://pcpartpicker.com/p/QFwJwP/by_merchant/
Power Supply: XFX TS 550W 80+ Bronze Certified ATX Power Supply ($53.99 @ Newegg)
Total: $53.99
Prices include shipping, taxes, and discounts when available...