2 Chamber Design

I think you should go check the sticky thread for good reactor designs, where you can find what you are looking for.

That design, or at least a very close variation is up, but gregtech reactors are only partially up (problems with how to measure efficiency when the thorium/plutonium balance is off).

I don't have any two chamber reactors planned, I can't get good efficiency out of it, but I have single chamber ones, this should meet your needs.

http://www.talonfiremage.pwp.b…mxnqfc5y31moxajan7gak1s00

Not quite as much power, but much more efficient (ignore the planner, it doesn't take into account that plutonium produces 5 times the power of uranium). You will still lose out by building two of those isntead of one 5 or 6 chanber, but if its what you need its what you need.