dont know if this will help or not. I ve built 2 comps and upgraded another in last 6 months. Heres some of the stuff I encountered
Comp 1;
XP Pro 32bit (started with windows XP 64bit)
Asus M2n SLI am2 mb
4 gig ram
am2 6400 3.2 ghz dual core
Nvidia 8800GTX oc
150 gig Raptor 10k HD
22 in flat monitor
Frame rate in AH 59-60
Power probs, had to change from 550w pwr supply to 750w(180$) CPU heat prob (39 to 58c) New cpu fan ($55) still runs 39 to 55c
Nv 8800GTX s require two power plugs each. Tried Win xp 64 bit, worked with some games not so well with others. Win Xp Pro recognizes 3.5 ish ram. No difference in games with dual core.
Computer 2
XP Home
939 cpu SLI 2.4 ghz single core
Nvidia 7950GT x2
2gig ram
19 in monitor
Runs good,cool. Frame rate in AH 120-140
Comp 3.
Win XP Home
462 mb, 2.2ghz
Nvidia7600 gt
2 gig ram
Frame rate in AH 55-60 w 22 in monitor
Not much difference in AH with comp 1 and 2 visually. Slight loss of eye candy with computer 3 in AH. Computer 1 really shines with games like Call of duty. If you do most of your gaming in AH a super computer is not that big a necessity.