Further thoughts -
Ideally I think the Xeon e3-1240L v5 would be the best LGA1151 processor
2.1 - 3.2Ghz, 8mb cache, 4 Core + Hyperthreading, 25W.
It was only released Q4 2015 so I don't think it is available quite yet, and it's an OEM product. Did find one place though -...