we are actively working on bringing many new features in the future releases.
PhoenixMiner is fast (arguably the fastest) Ethash (ETH, ETC, etc.) miner that supports both AMD and Nvidia cards (including in mixed mining rigs).
It runs under Windows x64 and Linux x64 and has a developer fee of 0.65% (the lowest in the industry). This means that every 90 minutes the miner will mine for us, its developers, for 35 seconds.
PhoenixMiner also supports Ubqhash for mining UBQ, ProgPOW for mining BCI, and dual mining Ethash/Ubqhash with Blake2s.
The hashrate is generally higher than Claymore’s Ethereum miner (we have measured about 0.4-1.3% hashrate improvement but your results may be slightly lower or higher depending on the GPUs, drivers, and other variables).
To achieve highest possible hashrate on AMD cards you may need to manually adjust the GPU tune factor (a number from 8 to about 400, which can be changed interactively with the + and - keys while the miner is running).
If you have used Claymore’s Dual Ethereum miner, you can switch to PhoenixMiner with minimal hassle as we support most of Claymore’s command-line options and configuration files.
Please note that PhoenixMiner is extensively tested on many mining rigs but there still may be some bugs.
Additionally, we are actively working on bringing many new features in the future releases. If you encounter any problems or have feature requests, please post them in our thread on the bitcointalk.org forum.