Do you have your production software for Windows/Linux or is it only for MacOS? If you do, then you can very likely get the same specs for much lower cost from Taiwan based ODM builders like AIC, Gigabyte etc. They have these server-class motherboards in datacenter class mechanical/thermal chassis. After that, you can ask them to slap on whatever Intel CPU with how much ever RAM and how much ever PCI-E cards (GPUs, NVMe SSDs, custom ASIC accelerators, 50Gbps NIC etc) you want.