Yeah, the other big benefit is that the Max-Q's have blowers that exhaust the hot air out of the box, the workstation cards would each blow their exhaust straight into the intake of the card behind it. The last card in that chain would be cooking, as the air has already been heated up by 1800W, essentially a hair dryer on high.

Or could be the server edition 6000s that just have a heatsink and rely on the case to drive air through them, those are 600W cards.