07-06-2017, 02:08 AM
(07-06-2017, 01:45 AM)stephen fleming Wrote: I have seen boards with the processor on the bottom of the board, but not many. Is there any disadvantage to doing this?
Not sure if there is any disadvantage other than the obvious one of heat rising
Maybe routing of the traces will be a bit more challenging when they need to access stuff on the other side of the board?, unless they basically flip the board layout over? But I get you point, if you're using the board for anything more than just itself, machined cases like the one I linked aren't possible! 
Hence the more traditional big heatsink on the CPU (and memory if needed) and fan to cool the whole thing down.