The AMD Radeon RX 6600 XT is an Ethereum miner's dream with 32 MH/s at 55 W
Ethereum miners have been drawn to NVIDIAs GeForce RTX 30 series cards, but AMD now has a compelling option in the shape of the Radeon RX 6600 XT. The Navi 23 card is twice as efficient as a GeForce RTX 3060, thanks to a 32 MH/s hash rate at 55 W.
Source: notebookcheck.net