Ok, I'm starting my initial planning for a new system. I haven't upgraded in a while (still on a Q6600 based system) so I'm not really an expert on newer parts. Right now I want to chose my platform, not individual parts. I want to decide on which CPU/chipset I want to go with and what graphics config to go with. One thing to note is that I value silent computing very greatly. So I like to pick parts that are more efficient. That said, I love a 4GHz+ quad core overclocked multi-gpu rig just as much as the next guy. My budget is around $1200 for everything, including a LCD, so keep that in mind. I can go over this if need be, but every dollar saved is... well... a dollar saved. Again, I'm not looking for exact parts right now. My initial thoughts were to get an i5 750, P55 board and a single 5870. Should I go i7 9x0/X58 instead? GTX 460 SLI? Cooling and noise worry me. Thanks.