The latest two versions of GMiner 1.39 and 1.40 have brought a number of improvements on Nvidia GPUs such as a new 4GB solver for Aeternity, improved Equihash 144,5 and 192,7 performance, performance improvements for Grin29, Swap and Aeternity as well as the most notable significant performance boost for BEAM (Equihash 150,5). You can see a something like a 25-30% performance boost for Equihash 150,5 on GTX 1080 Ti and that is really nice increase for the hashrate you can get if mining Beam. Performance wise you can get a BEAM hashrate similar to that of the latest MiniZ miner and the increase over the previous GMiner releases is significant for Equihash 150,5 so well worth the upgrade.
The GMiner miner requires an Nvidia GPU with CUDA compute capability 5.0 or later as well as CUDA 9.0 driver support, some algorithms are already supported on AMD GPUs as well (Cuckaroo29, Cuckoo29, Cuckaroo29s, Beam’s Equihash 150,5 as well as the recently added Equihash 144,5 and 192,7). Do note that GMiner is a closed source miner for Nvidia and AMD GPUs with binaries available for both Windows and Linux, also there is a 2% developer fee built-in the software.