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The Radeon RX 6600 XT may be the most power-efficient Ethereum mining GPU according to a video that shows its alleged performance. The card is apparently doing 32MH/s while sipping just 55W of power.

Is AMD's newly minted Radeon RX 6600 XT the most efficient cryptocurrency mining graphics card ever produced? It is probably too early to tell (considering the card only released to retail today), but ...