Ocminer, the admin of the Suprnova mining pools, has been pretty actively maintaining and further improving his supminer fork of ccminer (source) adding numerous performance improvements for the X16r and X16S mining algorithms. So if you are mining either Ravencoin (RVN) that uses the X16r algorithm or Pigeoncoin (PGN) that uses the X16S algorithm you might want to try the supminer or update it if you already use an older version than the latest 1.5. In the last two days there were numerous performance updates regarding various algorithms that are a part of the X16r and X16S, so supminer could as well be the fastest miner for RVN and PGN at the moment. The miner is free and open-source with a 32-bit Windows binary release also available compiled for CUDA 9.1 (require R390 or newer Nvidia video drivers).
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