The Radeon RX 6600 is by far the most power efficient GPU of this bunch, drawing a staggering 73 fewer watts than the RTX 3060" (PCWorld review) : r/realAMD
Review of the AMD Radeon RX 6600 Mid-Range Desktop GPU - NotebookCheck.net Reviews
Review of the AMD Radeon RX 6600 Mid-Range Desktop GPU - NotebookCheck.net Reviews
AMD RX 580 vs RX 6600 XT | Test in 5 Games - YouTube