I played with the memory settings yesterday evening after a long nap.

First, don't trust the BIOS main screen memory frequency display. It's only occasionally correct.

With the OCZ Platinum DDR3-14400, here's what combinations worked for me with all other settings at stock...

333/800
333/1066
333/1333
400/800
400/1066

No other reference/memory frequency settings worked (hung POST or 3 beeps) even thought they were well within the capability of the memory.

Since the best setting is 333/1333 at stock FSB, I then started raising the FSB to see what happens. Right now, I'm at 378MHz FSB with a DDR3-1511 and having no problems. So I believe the problem is not that the board can't handle the speed but the BIOS just won't let you manipulate the settings correctly.

Randy: Try my working settings and see what you get. When you try each one, go into the Everest Cache and Memory Benchmark and run a test. Keep track of the results and see what changes. Try raising the FSB as well and see if you're stable. Also create a forum signature that has your system components in it. It'll help.