hi have im going to buy the hd 7770 vapor x to put into my build the psu is powerock 400w
the rest of the build
intel pentium g620
gigabyte h61m s2p
wd blue 500gb
and the card i will be buying the sapphire hd 7770 vapor x
Of course. You can even surely get away with a 350 W PSU, and I factored in upgrades even with that! And I assumed you wanted to keep it 4 years!
This power supply is more than enough.