Octominer is a Chinese based company that I had not heard of before but they seem to be a relatively new player in the mining market, there primary focus appears to be making specialist mining motherboards.
The Octominer B8PLUS mining motherboard supports 8 GPU, yes 8 PCI-E slots that you can easily fit a suitable GPU from Nvidia or AMD that is less than 4.5cm. The motherboard also features an integrated Intel Celeron 3855U processor
The motherboard takes SO-DIMM DDR4 memory chips, these are easy to find and you can also fit a external hard disk drive as the motherboard has an M_SATA port fitted to it
Lets look at some specs of this beauty
NEW BATCH IS READY FOR SHIPPING EARLIER THAN EXPECTED. ACCEPTING PRE-ORDERS FOR THE NEW BATCH. BOARDS WILL BE SHIPPED OUT BETWEEN FEB 5th AND 8th!