If money were not a problem I'd have a bunch of PCs, including a home PC and a gaming rig, but as it stands I can't afford that.
I have 1 PC that does everything- everything at once mind you, and it's an i7 920, on an Intel x58, with 3GB DDR3, and a GTX295, running WinXP SP3 32bit.
At the time the II x3 wasn't available in south africa, the x4s were tho, and I wanted to buy one, I'm a huge AMD fan - Havn't dugg intel for a long time, but the intel 920 cpu was the same price, and the AMD MBD was more expensive by about $100. So I paid about $300 each for MBD & CPU, $100 for the RAM $520 for the GTX295 earlier this year. Not much for my only PC. OK I have 2 laptops as well, but they've got jobs to do, the 10" Acer ONE lives with my canon EOS 7D in it's bag as storage, and the LG S1 is only used as a mobile filesharing archive at LANs
So same price CPU, but much weaker, that needed a more expensive board that couldn't run my (at that time) 2 nVidia 8800GTs, so why pay more for less that wouldn't support both my graphics cards?
Anyway now I play anything at 1920x1080 graphic options wide open, while PS3 Media Server is live transcoding & streaming movies or TV series to the TV room (mother is a sci-fi freak). Basically I can do anything I like at any time in the background, antivirus scans, defrag, formatting drives, writing disks, transcoding & muxing, PMS, downloads, whatever, and there's no effect on gaming performance
Incidentally, in the 9 or 10 months I've had this machine, not 1 single windows crash,no bluescreens, jack. & this is the same windows that was running on my AMD Athlon64 3600, plugged the boot drive into the new board, booted up, & loaded the new MBD sound, & NIC drivers, no reinstall and it's been running very fast ever since
So yeah I guess it boils down to what you want to do, as a pure gaming rig I'd go X3 as well with a nice cheap inno GTX 295,and not bother with over clocking (sorry guys). But I need the background grunt so the 920 was a clear winner.
It's like bikes, I roadride, deal with rushour traffic & do track days so I went with a 2009 Fireblade - for the extra grunt
😉 If I only did trackdays I'd have saved huge & bought a 675 Daytona & pimped it out