Upgrade graphics help.

[Guffmaw]

I finally got enough money to upgrade my not so good Intel 4000 HD graphic card, to a GTX 770 but will these specs handle it,
Intel Core i5-3570K 3.4GHz Quad-Core Processor,
ASRock Z77 Extreme4 ATX LGA1155 Motherboard,
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply,
GSkill 8GB (2x4GB) 1600Mhz DDR3 Ripjaw X Series Intel XMP Memory
My concern is the power supply same people say i need a 600w but could i get away with it without doing any damage.

 

[MysteryINC]

XFX have great quality PSU's. This means that a low end PSU will need 600w when a proper PSU (SeaSonic, XFX etc) will be able to handle something at 500w.

 

[iamlegend]

Yes you have a great build!