Pegged against the RTX 2080, and using Digital Foundry and other sources, we should have current performance tiers as something like this:
RTX 3090 | >180% |
RTX 3080 | 180% |
RTX 3070 | >120% |
RTX 2080 Ti | 120% |
RTX 2080 Super | 105% |
RTX 2080 / RTX 2070 Super | 100% |
RTX 2070 / Radeon 5700 XT | 90% |
Radeon 5700 | 80% |
I'd assume Big Navi will land somewhere in the 120% - 200% range, probably around the middle, and consume more or less as much power as the GA102 cards.