Hey guys/gals, adjusting clock skew did help my stability. I have channel A advance 150 and channel B delay 250. Problem is I don't know if these are the best skew settings. What I attempted was to put 1 memory module into channel A and turn up the frequency until I got memtest errors. Problem is that this board is so PICKY. I turned down CPU multiplier in order to try to isolate the ram. I could get FSB up to 485 but no higher. It seems that everytime I adjust a setting that the mobo doesn't like it will not post and then I have to do a hard reset and then memory defaults to 1333 and I get an overclock error (major pain in the A$$). I then tried with 2 modules in order to try to tweak channel A and B. I got a bunch of errors with 2 modules unless I disabled DRAM static read and DRAM dynamic write but I ran into the same problem as I dialed things up. I then left them enabled and thought I would go the other way, lowering DRAM frequency until errors disappeared. But low and behold again I hit a wall where the board would not post again. I then tried all 4 sticks and got no errors with DRAM static read and DRAM dynamic write on auto all the way up to 1940 MHz. I even turned the voltage down to around 1.84 and couldn't believe that memtest still ran error free (only went once thru 5th test however - longer may have made a difference)

So bottem line is that clock skew seems to make a difference. Prime95 was stable but system would crash until I adjusted clock skew. I would be interested if anyone else has tried to dial in their clock skew. I would assume it would be similar among the boards but may not be exactly the same. If anyone accomplishes this I would appreciated it if you could let us know what the optimal skew is for channel A and channel B on your board. I suspect that I am limited because of an extremely picky board in addition to a quad core. A suspect a dual core would be able to do it much easier.

Other question is---How can I (What is the best way) to induce errors in memtest in order to dial in the clock skew? <can you believe that I am actually asking for memtest errors?> I tried tightening the timings but again the board wouldn't post. I tried progressivly lowereing DRAM voltage and this just made memtest run hit or miss. It would just lock up after a short amount of time even though no memtest errors had appeared. Tony, perhaps you could help me out here. Thanks.