Right now just on one side, U5,6,7,8 at 300MHz. With steamboats black heat sink and a fan the heat sink runs 37C (on that corner, barely warm to touch) in 32 ambient.
2 things Terrahash is waiting for:
Avalon to deliver the chips, and
BKKCoins to finalize design.
Looks like the design is getting very close. 300Mh per chip and barely warm. Looks like those 18Gh boards are more like 19.2Gh now.