@ BeetcoinScummer
In what way is it artificially constrained?  My goal is to try to determine a method for getting most hashs per watt, in a proportionate matter--as in, a GPU that mines 100 Mhashs for 80 watts would be more desirable than a GPU that puts out 200 Mhashs for 170 watts.

Same applies for motherboards.  A mother board that has 4 pcie slots and consumes 50 watts, would be more desirable than a mother board that consumes 30 watts, but has only 2 pcie slots.  (fewer GPUs per system)

Coincidentally a system that'd perform well with bitcoin would do great for most everything else I'd use it for--which is why I don't want to invest in ASICs.  If you're talking about not considering ASICs as being constraining, then yea you're right...  it is constrained

EDIT: I want to take it to the extreme and find ways to squeeze-out even more efficiency.  Like taking mobos that draw low current and finding ways to make them draw even less