haxxiy on 08 April 2023
Doing some napkin math, assuming a 30-50% density increase and a 10-15% performance increase at the same power, and 25-30% power savings on 3 nm, to theoretically double the 4090 one would need a ~ 810 mm2 die with a whopping ~ 700 W TDP.
This monolithic die, larger than any Nvidia ever released outside of the HPC market, would also be at least 80% more expensive to manufacture than the 4090's.
That doesn't count architectural improvements but also assumes perfect scaling per transistor and frequency, so take it as you will.
