XFX MB-750I-72P9 NVIDIA nForce 750i SLI Socket 775 ATX Motherboard w/Audio, eSATA, Gigabit LAN & RAID 2-Way technology allows multiple XFX graphics cards to run in parallel for scalable graphics performance PCI Express 2.0 Up to 1800 MHz Front Side Bus Speed in Overclocking Mode DDR2 JEDEC Memory Architecture Four SATA drive support with NVIDIA MediaShield storage technology