Can a 400w Corsair PSU run a Radeon 5770?

Solution
The two heaviest power draws are the CPU and the video card. You can figure 10 amps for the CPU and 6.5 to 8 amps for the 5770. Unless you have a lot of hard drives, you will have plenty of power in reserve.

Corsair rates their PSU's very conservatively. That's why the 400CX is my favorite under 500 watt PSU.
The two heaviest power draws are the CPU and the video card. You can figure 10 amps for the CPU and 6.5 to 8 amps for the 5770. Unless you have a lot of hard drives, you will have plenty of power in reserve.

Corsair rates their PSU's very conservatively. That's why the 400CX is my favorite under 500 watt PSU.
 
Solution