This is essentially folk wisdom - but I think you can trust the other people in this thread that it's accurate. I doubt anyone has done a scientific study on th

This is essentially folk wisdom - but I think you can trust the other people in this thread that it's accurate. I doubt anyone has done a scientific study on this, but you could see this for yourself by setting your computer's clock rate lower and re-running the benchmark. I expect that if you have a 4090, you have an Intel or AMD CPU that exposes a core clock multiplier. You could run this benchmark with whatever value it's at, then reduce the modifier by say, half. That should halve your CPU's clock rate, and I'm guessing you'll see the frame rate decline similarly. You can conclude that the game is "CPU bound", then. Even if your GPU was infinitely fast, you have to remember that game developers are not optimizing for the game event loop to run in sub-millisecond times. If the core loop in the game takes under 16ms to run on a common CPU, such as one in a console: that's better than 60hz and the overwhelming majority of video game players will never see a benefit. Some game developers, I see someone in another thread mentioned Doom Eternal, pride themselves on that optimization. With a fast enough CPU and GPU, you could probably reach 1000 FPS on Doom Eternal. A quick search suggests this might have been accomplished with a liquid cooled, this was done with a liquid nitrogen cooled PC with a 6.6GHz CPU: https://www.pcgamer.com/heres-doom-eternal-running-at-1000-fps-on-a-liquid-nitrogen-cooled-pc/ https://www.pcgamer.com/heres-doom-eternal-running-at-1000-f...