apache, I don't think it's a stupid question. Oviously it makes a difference what games you play, or what you use it for, but if you have a single 20" display, I don't believe you need a CF setup, even for Crysis. Resolution does make a big difference. I can tell a huge difference going from 1920*1200 to 2560*1600, I have a trifire setup, and I think it's overkill at the first resolution, but helps at the latter. My friend ran Crysis fine on a single 4850 with a 20" monitor, so it's all preference