Quote: Originally Posted by Rockrz
I've heard other say they didn't have to do anything in the BIOS, that their machine increased on it's own to 1866MHz
Although SB and IB CPUs they are capable of running at 1333,1600,1866, or 2133 the official support speed is DDR3 1333.
So when you set up a system, at first boot it should be set to 1333 regardless what RAM you installed.
First step is to set the motherboard to Optimized defaults. It goes by the CPUs spec, which should be 1333.
Unless some motherbaords have a workaround, but I ve always had to manually set the speed or the XMP profile after the initial setup.