Yes, so I'm betting on these 14nm Atom boards because they are very performant per watt (I get twice the server juice out of these at 25W than I get out of my 6

Yes, so I'm betting on these 14nm Atom boards because they are very performant per watt (I get twice the server juice out of these at 25W than I get out of my 6600 desktop at 65W!!!!!!!!!) and I think they will be more reliable at 42 celcius full blast than the still non existent 10 or smaller nm. I even think like you that my 45nm D510MO probably will outlive these! But it's so underpowered (like 1/10 of the perf. at 15W) compared to these that I'm willing to take the risk! The risk of new boards being so much better that I'll have to throw these away ever is zero at this point, memory being the bottleneck!