Not a lot of rumors to go with. Intel has the crown in ST and MT workloads, they need to fix the gaming power consumption on their high end models, AMD has nothing to show until at least next year, so here we are with 14th gen around the corner. If they can keep the clocks high while bringing gaming power draw closer to alderlake, then we are golden, im buying one. If not, skip and wait for next gen
If I had to guess any efficiency improvements they will just use them to push clocks even higher. The rationale would be, if you want efficiency power limit them yourself. Which is fine with me