One small problem...The M4A79TD-Evo does not support the new hex core Thuban CPU's. Was planning on new CPU for next upgrade, but if there is not a bios update out for it by then, a phenom x4 will probably be enough from where I am coming from.
And about memory support, the controller is part of the processor, so the motherboard doesn't really matter. On my processor, I was able to hit DDR3 1800 8-8-8-22. No platform supports 1600 by default.