>> If what you say is correct about the comparison with Zen 1, you should keep in mind that Zen 1 (of which I also still have one) has an IPC equivalent with th

>> If what you say is correct about the comparison with Zen 1, you should keep in mind that Zen 1 (of which I also still have one) has an IPC equivalent with that of Intel Broadwell, a CPU launched in 2014, i.e. 10 years ago. So I just upgraded my Zen1+ processor (2400G) to a Zen3 (5700G) which doubled the core count and upped single core performance by about 50 percent. My favorite benchmark runs 3x as fast. Now Zen5 AFAICT is not more than 2x the performance of Zen3. So per-core the state of the art AMD is maybe 3x that of Zen1. In the last 10+ years the only significant jump due to an advanced node was with the switch to EUV lithography (TSMC 7nm) and that jump was included between Zen1 and Zen3. All the other node advancements seem to be 10-15 percent performance with new CPUs getting a modest IPC increase on top of that. If there really is a RISC-V chip with Zen1 performance that's really quite good and I'd be happy to have it. Not sure what node it's on either, so there's probably room to "buy" more performance.