Here is what I ordered a week ago but it will cost you 2,200$ (CDN) without a monitor, keyboard and mouse.

Intel Core I7 920 2.66 G/8m/s1366
PNY PCI Quadro FX580 DVI 512 megs DVI BTE (video card)
2  TerraGigs SATA2 Western Digital (hard disk)
S1366 Asus P6T X58 PCI (motherboard)
650 watts Antec Earth Ea650 (power supply)
2 sims Kingston KVR 1333 mhz DDR3 6 gigs Kit (Total of 12 gigs of memory)
2  LG dvd writer
Windows 7  Pro X64 OEM

I don't buy a computer for today but for the next 5 years so I don't buy HP, Dell, Acer but a good old clone as we called them a few years ago.

That computer will be my 10th since 25 years.

Good luck

Michel