I'm having real trouble deciding between these two for my overclocked i7 920 build. The Gigabyte has SLI support which although I don't plan on using, is nice to have just in case. It is also regarded as a good board for overclocking. However it only has 4 DIMM sockets and two full length PCIe slots. The Asus on the other hand doesn't have SLI support, but has the full complement of PCIe and DIMM. I believe the BIOS is a little more more user friendly and Asus is a generally regarded as the better "brand". I am not particularly interested in little bells and whistles, just which would offer the most stable, reliable overclocking platform and is likely to be supported best in the future with BIOS updates etc.