New computer, but which one is better? Both have these common components: - 1 GB DDR / PC3200 (2 DIMM) - 400GB 7200 rpm SATA Hard Drive - 16X max. DVD-ROM - Double Layer 8X DVD+RW/+R drive - Sound Blaster Audigy 2 ZS with front audio ports - Altec-Lansing VS3151 5.1 Speakers (6 speaker set-up) - 2 USB 2.0, 1 Firewire ports - 300 Watt Power Supply - 3 PCI Expansion Slots (2 available) - High-speed 56k modem - Integrated 10/100Base-T networking AMD Athlon(TM) 64 3700+ operating at 2.4GHz Total memory slots: 2 DIMM Front-side bus (processor-dependent) 1600MHz using HyperTransport™ technology with up to 9.6 GB/sec total processor-to-system bandwidth One 8X AGP slot 256MB DDR NVIDIA GeForceFX(TM) 5500, DVI & TV-Out or Intel(R) Pentium(R) 4 540 w/HT Technology (3.2GHz) Total memory slots: 4 DIMM Front-side bus (processor-dependent) 800MHz One x16 PCI Express slot 256MB DDR ATI Radeon X600 Pro with TV-Out and DVI The big differences are the processor, front-side bus speed and video. The AMD is $40 more. This isn’t going to be a big gaming machine, some games though.( games I currently have installed and play: ghost recon, neverwinter nights, sacred, raven shield, and matrix online) Just looking at speed, I think the AMD is a bit better and I am leaning that way. Anyone have any facts or experience to help with my decision? more specifically, is there a big differance in running win xp pro or win xp 64 on a 64 bit proc.? to my understanding(limited as it is) theres no big advantage in running 32 bit software on a 64 bit proc.????