AMD releases GPU Comparison Tool so you need not look up third-party benchmarks - Neowin
Radeon™ RX 6800 16G Key Features | Graphics Card - GIGABYTE Global
AMD Next-Gen RDNA 3 'Radeon RX 7000' Brings More Than 50% Performance Per Watt Over RDNA 2, 5nm Advanced Chiplet Packaging With Next-Gen Infinity Cache
Amazon.com: Computer Graphics Cards, 4GB Graphics Card, for AMD Graphics Card, GPU for Gaming PC, Low Noise and Quiet Work, HD6770 128Bit DDR5 650MHz : Electronics
AMD Big Navi (RX 6000) release date, price, specs and performance