When I received my replacement Sabertooth X58 where the last also had the same issue as well I noticed my ram was tight fitting it into the slot. I was experiencing trouble getting the board plus slot to detect the ram. I really had to play with the ram wiggling, applying pressure and reseating to finally get the board to detect 6GB in tri channel. I really had to play around to get the last 2GB stick for 6GB total, slot A1 seemed most finicky.
Second issue or non-issue is that randomly the board will decide not to post, usually on a cold boot then when I press reset I'm greeted with an 'Overclock failed! Press F1 to enter the configuration or F2 to reset to defaults" but my overclock is stable because I ran Prime95 and Intel Burn test without stability issues or crashes. I play games and use emulators just fine without stability issues or crashes.
Second issue or non-issue is that randomly the board will decide not to post, usually on a cold boot then when I press reset I'm greeted with an 'Overclock failed! Press F1 to enter the configuration or F2 to reset to defaults" but my overclock is stable because I ran Prime95 and Intel Burn test without stability issues or crashes. I play games and use emulators just fine without stability issues or crashes.