Nvidia GeForce 6800U 256MB PCI-E $9500
Nvidia GeForce 6800U 512MB PCI-E $10000
Nvidia GeForce 7800GTX 256MB PCI-E $14900~21000

買7800GTX又怕CPU餵不飽顯卡,不如買6800U剩下來的$$來買Opteron144或146