Comment by colingauvin

A single Spark alone is not worth the price. You are paying $1000 just for networking equipment you aren't using. At 2x it starts to maybe become worth it if you don't want to deal with Apple. Outside of the newest Macs, I can't think of anything else you can get 256 GB ~550 GB/s memory bandwith for $8200. Even at 3-4 Sparks it scales relatively well.

With 2x Sparks, I am getting 40 t/s. I'd guess that without MTP you'd get 12-15 on 1 Spark, maybe 20 with MTP?