Hi guys! I just have a quick question. Currently I have a 6770 which runs perfectly fine in my system. I was wondering if I were to upgrade my GPU to a 7850, would the PSU requirements be the same? My PSU is a bit weak. It's a 400W low end PSU(Came in with the computer). However, based from the few sites I've seen, the 7850 seems to pull out just as much power as the 6770!