Yeah it has 2 pci-e 16x slots but it uses the nforce 4 ultra chipset so you CANT use SLi. There is a mod though you can do to the chipset to make it run SLi. I dont know if you can still do that though...PerfectSK said:Yeah, everything looks good. It has two pci-e slots, so you install 2 graphics cards, supports up to 4gb of pc3200 ram. From the reviews, they're saying its good for overclocking, but be careful when installing it cuz it's vulnerable to static electricity.