Here we present frame rate figures for each graphics card, averaged across all 12 games on test today. These figures can disguise significant variations in performance from game to game, but provide a useful overview of the sort of performance you can expect at each resolution tested.
Looking at the big picture overview, the RX 6600 sits between the RX 5600 XT and the RTX 2060 Super in terms of the average performance at 1080p; it's 3% faster than the former GPU and 3% slower than the latter. Compared to the RTX 3060, it's 6% slower, while it's 16% slower than the RX 6600 XT.
At 1440p, it does drop off slightly, with the average frame rate now identical to that of the RX 5600 XT. It's still 7% faster than the RTX 2060 here, but it's 12% behind the RTX 3060.