Even though the Graphics Core Next GPUs have been slightly underclocked to 825MHz, and even though they technically offer better performance per watt than a single-GPU configuration, their overall 375w power draw could still get you in trouble with your local power station.
"If we go ahead with a configuration which is also taking into account the manned version, this will allow us to reduce drastically the overall cost of the capsules, " Mrs Di Pippo told BBC News.