My specs are as follows:
CPU: P4 3.4GHz with HTT
RAM: 3 GB DDR2 533 MHz
3 SATA HDD's @ 7200 RPM with 8MB cache
nVidia 6800 PCIe
Sound Blaster Audigy 2 ZS
Gigabyte Ethernet adapter
That is about all the relavant info i can provide. I have heard of Vista running on systems that have 1GB of RAM. Personally with my 3GB i can run just as much as i do in XP without any lag at all. I can game easily, photoshop, encode, basically everything that i need to. At this time it is jsut easier and faster for me to use XP that is why i am. If it wasnt for that fact i would be in Vista.