i built a pc on newegg for 8k srry out of ur budget. it was almost top of the line.
specs
tyan nforce4 pro dual socket 940
2x Dualcore Socket940 Italy core Opteron 280s
16gb of Ram from kingston(4gb(2x2gb)kits)
2x7800gtx's (512s were out)
4 Hitachi SAS drives
PCI-X LSI MegaRAID logic card
LianLi full tower i believe v2100b
2 I-Star 2x500w double redundant psus
4 Plextor dvdrw drives(slotloading of course

)
xfi platinum pro
if u had that system it would make like 30000 in 3dmark05









