With regards to the gpu hashing at 1000 h/s its a radeon pro duo
R9 390 hashes at 300 h/s with 40 compute units
Pro duo has 128 compute units hbm memory and tdp 300 watts
Please add your result to the GPU Comparison table.
https://en.wikibooks.org/wiki/ZCash_mining_GPU_ComparisonThats is some insane speed.