The Gigabyte G31M-ES2L motherboard supports the latest Intel Socket 775 Core 2 Quad/Core 2 Duo/Pentium Dual-Core/Celeron Dual-Core/Celeron 400 series Processors and Intel 45nm CPU processors at 1600/1333/1066/800 front side bus with the Intel G31 chipset. Gigabit Ethernet, integrated High Definition audio, and a DualBIOS solution gives a multiple security functions to the system. With the backup BIOS you can feel free to experiment with your rig knowing that the mobo can use the backup and restore your settings. The stable Gigabyte G31M-ES2L motherboard will last a long time thanks to the solid capacitors and Ferrite core choke design in the CPU VRM. Integrated Intel GMA 3100 graphics offer excellent gaming and multimedia graphics. This Intel G31 Express/IHC7 socket 775 mobo comes with various intelligent features to make your life easier. Revolutionary energy saving design with Easy Energy Saver technology to FSB 1600 (O.C.).