PhoenixMiner 5.5b

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PhoenixMiner 5.4c: fastest Ethereum/Ethash miner with lowest devfee (Win/Linux)

The new features in this release are:

• Added native kernels for AMD RX6800 and RX6900 GPUs. These are faster than the generic kernels and produce a lot less stale shares
• Updated kernels for AMD Polaris, Vega and Navi GPUs that are slightly faster and use less power than before when mining ETH. To use these updated kernels, you need to use drivers 20.5.1 or later under Win10, or 20.10.x or later under Linux
• The Nvidia mining cards (P106, P104, etc.) can now use straps and hardware control options (power limit, memory overclock, max temperature, etc.) under Windows
• Added support for AMD Linux drivers 20.45-1164792 and 20.45-1188099. Use this drivers only if you have RX6800 or RX6900 GPU. WARNING: Vega and Navi GPUs wont' work with these drivers!
• Automatically set -ttli instead of -tmax when the later is not supported by the driver. This will throttle down the GPUs when they reach the specified temperature to avoid overheating

If you have RX6800 or RX6900 card, do not use the PhoenixMiner hardware control options (-cclock, -mclock, etc.) because there is yet another undocumented change in OverDrive and some of them will work, but some won't with weird results - we will implement them properly in the next version. Instead use the AMD control panel to set the card parameters. Good starting point are the following options: core clock 1500 MHz, mem clock 2050 MHz, core voltage 800 mV, set faster memory timings, and a custom fan curve to  keep the temperature below 65-66 C.

Please let us know if you have any problems or questions related to PhoenixMiner 5.5b.