We don't know yet how fast is the RTX 3090 BFGPU going to be. But NVIDIA said that it is the "world's first 8K gaming GPU, enabling gamers to experience 60 fps in 8K resolution across many top games". NVIDIA also mentioned that the "RTX 3090 is up to 50 percent faster than the current ultimate PC graphics card, TITAN RTX". I'm guessing that DLSS was enabled to reach 60 fps on an 8K resolution. We'll find out when the reviews go live towards the end of this month.