What the pro's and cons of Vista 64 bit and 32 bit. The system is a Asus M2A-MVP with a Athlon 64 X2 Dual core 6400+ CPU Running 4 GB of Kingston Ram. Also has a Sapphire 512 Video card with fire capabilities as well as the MoBo. Creative 7.1 Sound card, 750w PSU. Overall. Pretty good machine.