^^^I'm running i7 950, with a darknight cooler, 12gb of 1600mhz ram, with very tight timings, MSI cyclone gtx460 1gb, 3 samsung 1TB drives, and one 640gb WD caviar black. Creative X-Fi Titanium Fatal1ty Pro sound card, and few extra fans.
All in an antec 900 case on an asus p6t se mobo, with a 650W psu.
Two HP2710m monitors, logitech z2300 speakers, although I have a total of 6satellites and two subwoofers in the setup. For a headset I use the g35, mouse is a logitech g500 - how I lived before hyperscroll and multi directional scroll wheel idk... and for keyboard, razer black widow ultimate.
Not exactly a champion setup, but it gets the job done very well, and I can OC everything quite a bit.
Unfortunately with sandybridge, I think I'm gonna have to ditch the whole setup and build fresh at some point. Although I think an SSD, and a better video card will buy this computer another year or two easily. Aside from hd, if I OC I got wei rating of 7.9 across the board, but I really have no need to oc... since doing it for experimentation I haven't had the need to at all.
The reason I got the particular wd drive for this build is that it has only two platters, and had very low failure rates. Very surprisingly the drive runs a bit warmer, and has worse read/write/seek speeds than the cheaper samsung drives.