Quote Originally Posted by zlojack View Post
Ok, I think my problem was RAM sub-timings.

I put them all back to Auto and now I'm back up and running at 20x160 with RAM at 1600 7-8-7-20 (though now CPUZ shows my tRAS as 25 even though it's set to 20 in bios, hmm)
Download Cpu Tweaker, it reads te ram timings correct (you can get it in the sticky "new memory tweaker..." in this forum).