It makes 0 difference to power consumption if you're comparing like to like kits. What matters in ram is the voltage. Most ddr5 sodimm kits run at 1.1v whereas some of the crazy fast kits run at 1.35v.
However, the only 1.35v kits I've seen were XMP (which I believe framework doesn't support at least on the AMD boards). You should be fine with whatever you go with.
https://www.amazon.com.au/Kingston-Impact-6400MT-SODIMM-Gaming/dp/B0C3J1GC17
1.35v at xmp. I believe it's the only kit at the moment.