DFI NF4 Ultra-D.
All the 06xx chips are doing well, but i was lucky to catch an 0601 UPMW. They are the bees knees.
Basically, with a 3800, the minimum OC seen at the minute is about 2.6ghz, with most people pushing 2.8ghz. And this is under air/water i hasten to add, nothing really...