I'm talking about the sierra. Yes, the chip level heat to be dissipated will be lower, but there will be around 1000W of heat anyway in there. Having the units in a real datacenter will help a lot, but anyway, putting the radiators where they are makes no sense at all.
Agreed it is dumb but honestly it isn't going to make that huge of a difference. The chip itself (as opposed to entire system) isn't going to use more than 300W (or less) each so you are talking 900W spread out over a large area with significant airflow. More airflow means lower temp rise (less thermal energy per unit of air). The air will be warmer but it isn't going to be 20C burn your hand and melt the capacitors warmer.