How was it meaningful? What would the info "This one is called 5nm and this one is called 8nm" give you? Because it didn't really say anything about performance

How was it meaningful? What would the info "This one is called 5nm and this one is called 8nm" give you? Because it didn't really say anything about performance or watt or performance per watt. I have an old ATI Radeon HD4850 GPU, I bet it beats your Nvidia RTX 4090 since 4850>4090 ;)