4 x DIMM, Max. 32GB, DDR3 1600/1333 MHz Non-ECC, Un-buffered Memory * Dual Channel Memory Architecture Supports Intel® Extreme Memory Profile (XMP) * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists). * Due to Intel® chipset limitation, DDR3 1600 MHz and higher memory modules on XMP mode will run at the maximum transfer rate of DDR3 1600 Mhz. - See more at: https://www.advice.co.th/product/mainboard/intel-1150-vga-on-/asus-h97m-e#sthash.NjgaeKSs.dpuf