5200 Ultra GPU
Upgraded the ram on an XP machine from 256mb to 768mb and the difference was huge.
Also,upgradded from 2 6600 in slito a 7900GTX,difference was huge there aswell. hopefully the upgrade to a GTX280 will be as good.
And goin from a 19 5:4 to a 24inch 16:10 was huge aswell.