Pretty sure the gap at 4K was more than 20% TBF. You might be right, but I’ll be disappointed if you are.
Financially better off, but disappointed.
20% would have been fine if the 3090 had 16gb or 20gb and was priced at £899 though.
I would have happily ponied up the extra for that.
Now paying exactly double for 20% leaves me cold. Even if it clocks higher and the difference is 30% I am not sure I would spend it. I can afford it but it just doesn't make any sense yet.
Would rather buy a £649 3080 and then next year stump up for a 4090 if the extra performance/memory is needed.