Hi,i'm planning to buy a Asus Nvidia Geforce 8400GS DDR2 512 MB graphics card.my motherboard is d101ggc with 1gb ddr1 ram,450w PSU and its a p4 processor.this card's bus standard is pci express 2.0 but i only have a pci express x16 slot.is this graphics card suitable for my motherboard? suggestions please.......thanks in advance.