https://www.servethehome.com/ddr4-dimms-system-power-consumption-tested/ https://www.servethehome.com/ddr4-dimms-system-power-consump... which is the only sourc

https://www.servethehome.com/ddr4-dimms-system-power-consumption-tested/ https://www.servethehome.com/ddr4-dimms-system-power-consump... which is the only source I've seen that looks even vaguely trustworthy gives 2 watts per 8 gb of ddr4 (and ddr5 should be about 10% lower since it drops to 1.1 from 1.2 volts assuming similar amounts of current).