Well first, i have 2 choices now for this computer which i am using, 2 GPU left to choose from. Either the 8500 GT or the 8600 or 8400 GPU, so i hope to get one.
Anyway, the 2400 HD pro card is either too powerful or too lame to work with. I can hardly play about 70% of all of my games that i own. I can even play some of the simple ones at good speed. for example with Unreal II, i get around 11-12fps on the 2400 HD card, but switching back to the perfect FX5500 card i get around 19-30. Big difference. I don't know whats wrong with the 2400 hd pro, but it struggles on my rig. Maybe using a P3/600mhz/512 megs of ram is a problem with the card, but until i find the 8400 or 8600 or 8500GT, i will just use the FX5500.
Anyways, i think for my rig i only can use 512megs of ram which i am using now.