I'm selling a Bismuth GPU miner (OpenCL) that works for AMD and Nvidia.

Achieves a hashrate of 500-600 MH on AMD RX 400/500 series cards, and over 1200 MH on GTX 1080 Tis. Miner is optimized for AMD mainly, Nvidia has substantial CPU usage. Only supports solo mining currently to local pool created through Bismuth config file, or just to your node on the same computer.

Sale price for the miner is 2.5 BTC privately (3 copies MAX will be sold), or 5 BTC for full public release. If you are interested and would like proof, please PM me. Will use trusted Bitcointalk escrows.