I have one of each,bp6&powerleap adapter.It works,as a single unit,duals are a waste of jack.I dont know how high you can go,it should be up there,as I have a cel-2 633 at 950 on the bp6.I think the bp6 might have a problem with the 133fsb,but I am not sure.You may want to look at bp6.com and do a search.