I just found this thread, been playing around with mining Zcash for the last couple of days both in Windows 8.1 and Ubuntu 16.04.
Just playing around to learn about it.
Setup is dual E5-2670 cpus and dual AMD RX480's.
Using Claymore CryptoNote GPU Miner v9.7 Beta with the RX480's and it shows ~1175 H/s.
Running Minergate v6.6 on the Cpu's shows ~500 H/s on them and only ~16 H/s on the RX480's with Gpu mining turned on.
Running Minergate on the Cpu's and Claymore CryptoNote on the Gpu's gets the best H/s with ~ 1675 H/s but it shuts down the pc after about 10 minute's of running even tho every thing seems ok.
I have not tweaked any settings at all.
EDIT: I have been playing around with the minergate settings for the cpu and if I set it for 8 threads it shows ~300 H/s and if I bump it up to 16 it goes up to ~500 H/s . If I increase the number of threads above 16 it makes no difference with the H/s speed.
And running only 16 threads the the cpu's boost up to 3.0 ghz from 2.6 ghz with 31 threads running.