Elitegroup (ECS) announced a new bare bone kit "SF110-Q370 / B360" that uses a 33mm-thick ultra-slim housing. The units are socket LGA1151, the CPU is compatible with the 9/8th generation ... ECS launches SF110-Q370 / B360 barebone kits that are 33mm-thick
The fact you can pick your own CPU for something this small is actually pretty interesting. Most platforms of this size would be soldered. Granted... your choices are pretty limited.