The M1 Max GPU is definitely faster than the old 5600M in native MacOS game ports. But with bootcamp the game compatibility is much better and performance is playable as long as you limit yourself to 1536x960 instead of the native panel resolution. For software development I have found the performance difference to be a mixed bag. Xcode is faster on a clean build but not noticeably faster just making a small change, rebuilding and deploying to a device. Visual Studio for Mac is not native yet, so performance is just about the same. Running simulators is faster, but these days I just deploy to a real iPad/iPhone/Pixel device so it does not matter that much to me. For our full stack web app projects, I have found the performance with ruby/node to be about the same with the i9. Some of these projects are MVP's, so not much effort has been put into performance optimization. I expected the faster SSD to help a bit but so far have not noticed a difference. Maybe the 2TB has better random IO performance than the 1TB in the M1 Max. That being said, the M1 Max is definitely quieter all around, and it does not get noisier when using an external display. It was kind of ridiculous that the previous 16 inch was so loud with external displays unless you purchased the 5600M upgrade.