There main findings:
- Vista is generally slower than XP, but it's better at multi-tasking on dual core PCs.
- Your PC should have 1GB of RAM at minimum.
- Aero won't slow you down if you use a discrete graphic processor and enough memory.
- Apps run slower on 64 bit version but using higher RAM will close the gap.
Notice the difference in the performance of Vista with Dual core.
Using 2GB might help some applications but not a big deal.
As the reports states, apps runs faster in 32-Bit windows Vista
spend few bucks and enjoy the vista bliss !