Finally found this unique board, X99 12 core Xeon Mini-ITX just for the hell of it : r/intel
AsRock Rack E3C256D4I-2T Mini ITX Server Motherboard,Supports Intel® Xeon® E-2300 and 10th Gen Intel® Pentium® Series Processors,Single Socket H5 (LGA1200),Intel® C256. - Newegg.com
AsRock Rack Mini-ITX Server Motherboard LGA3647 Intel C621, 2 x M.2 Model EPC621D4I-2M : Computers - Amazon.co.jp
ASUS P10S-I Xeon E3-1220v6 8GB ECC ITX 印象のデザイン www.gold-and-wood.com