As i've said before, my BH5 runs much better in orange slots than in yellow ones.
I've just flashed the 510-3Fixed and it is working better than any previous bios (tryied 310,310-p,510-2and3, 615,618-2 and 3) it is doing 237 1'5-2-2 at 3.04v while with any previous one i needed 3'17v for that. CPU seems to need a little lower voltage to run at same frequency. Now trying 240x10 1:1 1'26v air cooled.
Edit: I was using SP2004 but seem that superpi fails :( (usually i can pass superpi and not sp2004, that's weird :S)