Tell me how to write a log file about the power consumption of a card?
just divide Sol/s on Sol/w from miner log

or use nvidia-smi like this:
"C:\Program Files\NVIDIA Corporation\NVSMI\nvidia-smi.exe" --format=csv,noheader --query-gpu=timestamp,pci.bus_id,name,power.draw --loop=3 -f powerdraw.csv
or
"C:\Program Files\NVIDIA Corporation\NVSMI\nvidia-smi.exe" --format=csv,noheader --query-gpu=timestamp,pci.bus_id,name,power.draw --loop=3 >> powerdraw.csv
for append result in file (not overwrite) and for realtime realtime reading this file