I was wondering if you knew what you were talking about, if you didn't and you're just asking this so we can do your homework for you, thats kinda messed up. Plus you can search the forum and find all sorts of threads about people asking for system specs, that could be a better source then directly asking it.
But since you asked I'll give you my dream system specs
-DFI LANPARTY NF4 SLI-DR nForce4 SLI Motherboard
-AMD Athlon 64 X2 4800+ Dual-Core Processor w/ a Zalman heatsink
-4x kingston hyper x 1gb ram buffered(black)
-2x Raid HDs (Size depending on whatever the largest available is)
-2x SATA DVD-Drives
-2x BFG 7800GTX Oced