You can set the TDP manually for the regular Ryzens, that does give you a significant reduction in power usage, at the cost of some performance. The difference

You can set the TDP manually for the regular Ryzens, that does give you a significant reduction in power usage, at the cost of some performance. The difference in power usage is much larger than the drop in performance. I haven't followed the Ryzen versions like the 3600E you mentioned, so I'm not sure how much binning is done there to get power consumption even lower, but I'd guess that you can get most of the effect with a regular Ryzen and manually setting the TDP to 45W.