Whoop!
Got through the whole weekend without any crashes
Changing the memory to XMP1 seems to have been the final piece of the puzzle.
Thanks omnidragon.
I still have disabled the USB3 ports and Marvell eSata.
Also Power Management set to S1
All wake up events disabled
But Turbo is now on, and is rock solid.
Now - just gotta wait for the new P67 boards to come out and replace it all anyway before my SATA Ports 2-5 die