It's a fraction, yes, but it's also delayed a lot. For a while the challenge has not been to remove heat from the general area, but to keep small spots from ove

It's a fraction, yes, but it's also delayed a lot. For a while the challenge has not been to remove heat from the general area, but to keep small spots from overheating within milliseconds. Cooling on the other side of the building does not play a big enough role for it to matter. (For enthusiasts, lowering environmental temperature would have the same effect.)