I don’t see GPUs having more then 3Ghz anytime soon as standard clocks. High core frequencies make a small chip have much better performance, so its cost efficient for AMD to make them but high core clocks are increasing power consumption. AMD is trading and evaluating size of the chip with its frequency to get the performance.
In my opinion, on the RDNA3 not reaching expected core clocks, its mostly down to poor performance of TSMC 5nm node to what AMD wanted to achieve. There target might been RTX4090 flagship performance but on the 5nm plus 6nm, and TDP 355W resulted in high power consumption, and to keep power down, core clock has to suffer.
Rx 7900XTX Taichi model has roughly 250mhz more in boost and a roughly 50W more power consumption then the AMD model.(https://www.techpowerup.com/review/asrock-radeon-rx-7900-xtx-taichi/38.html)
Sure, more often then not it was closer to 2 years apart from each series releases.
I agree with you that an early release would be smart if they are not competing in the high end with RDNA4.
That is fair to say, I am making a prediction here and its pure speculation.
But Rx5700 Xt released in Jul 7, 2019, RX 6800Xt Nov 18, 2020 and Rx7900 XTX Dec 13, 2022. So, it would be a year and a half from previous series.
You don’t understand how I came to the conclusion or just don’t agree with it?