Z87-A Motherboard supports Intel Socket 1150 for 4th Generation Core i7/Core i5/Core i3/Pentium/ Celeron Processors, Intel 22 nm CPU, Intel Turbo Boost Technology 2.0; Intel Z87 Chipset; 4 x DIMM, Max. 32GB, DDR3 3000(O.C.)/2933(O.C.)/2800(O.C.)/2666(O.C.)/2600(O.C.)/2500(O.C.)/2400(O.C.)/2200(O.C.)/2133(O.C.)/2000(O.C.)/1866(O.C.)/1800(O.C.)/1600/1333 MHz Non-ECC, Un-buffered Memory, Dual Channel Memory Architecture; Integrated Graphics Processor, Multi-VGA output support: HDMI/DVI-D/RGB/DisplayPort 1.2 ports; Supports NVIDIA Quad-GPU SLI and AMD Quad-GPU CrossFireX Technology; 2 x PCIe 3.0/2.0 x16 (x16 or dual x8), 1 x PCIe 2.0 x16 (x2 mode), 2 x PCIe 2.0 x1, 2 x PCI; Realtek 8111GR, 1 x Gigabit LAN Controller; Realtek ALC892 8-Channel High Definition Audio CODEC; ATX Form Factor 12" x 8.8" (30.5 cm x 22.35 cm).