Asus P5AD2 Premium and 5400s

Some interesting things have come out of that thread, which Ram Guy (Corsair's official rep) stickied in their forums:

Quote Originally Posted by drheim @ House of Help's Official Corsair Memory Support Forum
wanted to let you know that I have figured out that the Thermaltake Silent Purepower Butterfly 480w PSUs are not compatible with your motherboard when it is under load. I tried 2 different Thermaltakes and one of them did have Active PFC and I changed power cords and even tried taking the computer to a different building, but continued having the same problem. The computer would run fine for days, but would turn off after about 5 minutes into playing any game. Thought it was a heat issue for a long time and kept reapplying different thermal pastes with no luck in fixing problem. I had tried every single setting imaginable in the BIOS and still would not works after hundreds of attempts until I replaced the PSU.
So far there's 2 or 3 posters there that have switched to different PSUs and that's cleared up their problems. Nowhere near enough to say for sure that that specific PSU is the problem (could be just coincidence), however if you have a spare PSU that's hefty enough for it, it may be worth a quick swap to test it.


Quote Originally Posted by oddlycalm @ same site as above
Power supplies have an effect, but he early P5AD2 boards were buggy as a July picnic. I had two P5AD2 Premiums back in September and tried a several power supplies inlcuding a Antec TP380, Enermax Noisetaker ver2.0P 485, Fortron 480W and Antec TP550W. The one that worked best thogh was the Enermax EG701 600W. I got the board to where the only bug left was that it would boot uncommanded in response to network activity even though "boot on LAN" was disabled in BIOS.

The first P5AD2 went back and the second one would boot and go into bios fine, but it never even made it into Windows once. It too went back and I put in an Intel D925XCV and lived happily ever after, although without Firewire 800 and some other cool features. I have read numerous messages on forums from those having trouble, and was told that Asus revised the P4AD2 and that the new rev is working fine. If you are having trouble, make certain you determine if you have the most recent rev board. Very disappointing, best of luck to you all.
Also, are you guys underclocking the memory to match the system's FSB, or running it async, or just straight trying to bump up the FSB to the speed of the memory?