Gigabyte GA-990FXA-UD3 crashing with 1866mhz RAM

I'm using a GA-990FX-UD3 mobo with AMD FX 8120 cpu and im trying to get my 2 sticks of Corsair Vengeance 4gb 1866mhz RAM to run at proper speed but my bios defaults them to 1333mhz, I don't know much about bios ram settings so I am most likely doing something wrong but every time I switch it to manual and try setting the multiplier to 9.33 to get the speeds from 1333 to 1866 I crash when I try to startup, and I also crash when I try to do the easy overclock settings or whatever its called and use that to set it to 1866.
I know as a fact that my mobo/cpu support this RAM speed and it is the proper speed for the ram but i cant seem to figure out which settings I am using wrong. Also I am using version F7 of the gigabyte bios.
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  1. I have the same problem. I just bought the GA-990FX-UD3 with AMD FX8350 and Corsair Vengeance 4x4gb of 1866mhz DDR3 RAM.

    When I set the RAM clock multiplier to 9.33 the MB will not post. I get the same result when I clock the RAM at 1666 Mhz.

    If this is an incompatibility problem with the RAM brand then I need to find out ASAP so that I can return it.
  2. I figured it out myself, in the Easy overclock settings there should be a profile just labeled "profile 1" instead of the default profiles and that should be the one for your RAM assuming it has support for it. and also if this mobo can only run 2 sticks at 1866 in slot 1 and 2, slots 3 and 4 cant go past 1333
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