I doubt the efficient cores will have anything close to 70% of the performance of the fast ones : for such results, you'd need a performance core running 15% slower - that's what AMD does with Zen2 and more recent.If we assume the efficient cores will have ~70% of the performance of the fast ones, then a workload on all cores would equal to ~13.6 fast cores. That is, obviously, if the software can work it out, and there is enough cooling. In that scenario, it would be slightly faster than the 5900x, which, when it receives the extra cache, should catch up. I think Alder Lake won't be a revolution, but more of an attempt at getting more out of a hot and hungry architecture.
Yep. Now AMD fbs only care about SiSoft Sandra benchmarks...And just like that, Cinebench results no longer mattered!