[Nvidia] 9600GT weird case

[xyzionz]

Hi,I just upgrade my graphic card from 6600GT PCIE to 9600GT 512MB/256Bit and something weird happened to my pc. My total ram is 3GB ( 512X2 + 1GBX2 ) in dual channel mode , and before upgrade, in windows properties it display full 3.00GB of ram, but after i upgrade my pc it reduced to 2.87GB but in bios it displayed 3072MB/3GB of ram. and i wonder why . Even CPU-Z displayed 3072MB

This is my full specs
Pentium 4 506 2.67GHz Stepping 1 Revision E0
Intel D915PCY mobo
512X2 kingston PC4300 and 1GBX2 Corsair PC5300
Forsa 9600GT 512MB/256Bit

Regards,

 

[xyzionz]

Why is this thread being redirected..?