3 Things to Know About RAM Capacity and Power Draw
The power difference between 16GB and 32GB of RAM is negligible You are looking at 1–3 extra watts at most—less than a typical LED lightbulb.
You will not notice it on your electric bill or battery life On a desktop, the impact is invisible. On a laptop, you might lose 5–10 minutes of battery life, if that.
Do not let power concerns stop you from buying 32GB If your workflow needs the extra memory, the performance gain from not running out of RAM will save you far more energy than the RAM itself consumes.