System Manufacturer/Model Number Zen Productions OS Windows 7 Ultimate x64 CPU Intel i7-860 Motherboard Gigabyte GA-P55A-UD4P Memory Corsair Dominator 1600Mhz, 8-8-8-24 1.65v 2x2GB Graphics Card ATI Radeon 5770 HD Sound Card Intel High Definition Sound Monitor(s) Displays Samsung P2570HD Screen Resolution 1920x1080
Keyboard Logitech G110 Mouse Logitech MX Revolution PSU Corsair CMPSU-750HX 750W Case Antec p183 Cooling Corsair H50 Water Cooler Hard Drives Western Digital Caviar Black 500gb Internet Speed 768 mb/s
You do not need to supply it with it's very own PSU. That's beyond overkill. Just get a decent one that will support it as well as the rest of your system. With the 285 I would recommend 500W or higher. The 450 might be pushing it a little.