I'm a total newb to building computers so i have a few questions.
1) does this motherboard support dual-channel DDR3 or just DDR3?
2) Is it possible to mix and match different memory modules? for example, say i have 2 x 4GB memory sticks and 2 x 2GB memory sticks.
3) When looking for a video card, should i look for cards that names begin with Asus to match the motherboard manufacturer? What is the difference between a "Visiontek 900300 Radeon HD 5770 Video Card" and a "Diamond 5770PE51G Radeon HD 5770 Video Card"?
4) Would it be better to buy a single upper end card, or crossfire link 2 midrange cards?