So yeah, it's about the wattage that pcpartpicker.com shows when you are building your own rig. If example, for an entry level build with one GPU and it computed about, let's say 250w, is it safe to get a PSU with 450w (like Antec VP450 for example), I mean is that the peak wattage of your system? How about if you use it continuously or play for it for a longer time? Will there be any change with that wattage that was calculated? Please help me