I just bought My Asus G51VX RX05.. last week.! and formatted it to Windows 7 Ultimate 64 bit.. Currently installed Bad Company 2 and Dragon Origins..

Here is my specs:
C2D P7350 2.0 GIG
4gig ddr2
320 gig HDD 7200rpm
Nvidia GTX 260m 1gig ddr3
Intel Chipset
15 inch Screen 1368 x768 (i think)

Tested and very good performance!