The Asus P7P55D-E LX features the powerful Intel P55 platform to support Core i7, i5, and i3 processors. The motherboard supports the PCIe 2.0 devices for double speed and bandwidth. It supports DDR3 memory that features data transfer rates of 2200(O.C.)/1600/1333/1066 MHz to meet the bandwidth requirements of the latest 3D graphics and multimedia, as well as Internet applications. The dual-channel DDR3 architecture enlarges the bandwidth of your system memory to enhance system performance.