Like the title says, I need a PSU and a case. I would like THIS case but I could grab a different one. (I'd like everything to be below, $100, preferably below $80.)
For the power supply, I'd like it to be semi-modular like XFX 650w units.
I'm going to assume you mean the same time. Well the 460 takes 160 watts at maximum, and the 240 takes 69 watts. Together, they can draw 229 watts, but it's most likely not going to go up that high. Be prepared for it though.