Interesting. I'll have to spread the word about this. Could this also be a cause of instability on all A64s when pushing the vDIMM up to ~4v (what I tend to do with my BH-5/booster), do you need to stick the vCore up above 1.6v or so?

Something I'll have to look out for if I decide to pull this BH-5 and booster out for fun with the Opteron...it only needs 1.35v to max out on my board, so I could've easily fried it with 4v through the RAM.