The AMD manufacturer website states that the required minimum power for the HD 7770 is 500W, I find that very hard to believe since a 7770 consumes so less power.. so Im asking your opinion whether it is possible to install this VC to a system with a 450W PSU
System Specs:
Asrock H61M-ITX
Core i5 - 3330
1 x 8gb RipjawsX 1600mhz CL10 1.5V
1 x 500gb Seagate Baracuda
1 x 120 mm Silverstone AP121 fan
the PSU is the Silverstone 450W SFX PSU
SilverStone Technology Co., Ltd.- ST45SF