Hi guys, I decided to upgrade my computer and first of all my graphic card, but my brother keeps telling me something about compatibility of my graphic card and motherboard. Again, I have: Asus M3A78 PRO motherboard --> here is a review of it with all specs: http://www.silentpcreview.com/article855-page1.html The graphic card I would like to purchase will most likely be either of those: -Gigabyte GTX260 Super Overclock (http://www.motherboards.org/reviews/hardware/1952_2.html) -Asus ENGTX260 Matrix (http://www.overclockersclub.com/reviews/asus_engtx260_matrix/4.htm) This motherboard should support PCI-Express 16x (one spot) so it should be allright regarding that... . But it also says that it doesnt support 2 graphic cards (with exception of crossfireX with integrated card). I don't really understand that, but it should be possible to add this card and switch from using the integrated one to this added Nvidia right ? thanks for help !