I recently assembled a PC and can't get my RAM to run @ 1866. I have an AMD FX 6300, Crucial Ballistix (2 x 4GB) 1866 P/N: BLT2KIT4G3D1869DT1TX0, and a GA-990FXA-UD3 rev 3.0 FC BIOS. Made it to 1600 but I had to change my BCLK to 240. If I set the multiplier to 8 or 9.3, it doesn't do anything and defaults back to 6.67 (it IS set to 8 or 9.3 but the status still shows 6.67). I also manually put the timings to the recommended specs (9-9-9-27 @ 1.5v) and still stuck at 1333. I've been looking around the web for an answer, hopefully somebody can help. Thanks in advance.