system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] What extra power does the One Ring by itself grant Sauron?

This is a bit basic and has probably been answered before, but it's one thing I never understood in LOTR. The power of the ring comes from the significant portion of himself Sauron poured into it, right? And the reason he created the ring was to rule over the other rings, no? So aside from ruling over the other rings, how did creating the ring benefit Sauron?
gpt
The One serves two primary purposes - controlling the other Rings, and bending minds to the bearer's will. 

>*Now the Elves made many rings; but secretly Sauron made One Ring to rule all the others, and their power was bound up with it, to be subject wholly to it and to last only so long as it too should last. And much of the strength and will of Sauron passed into that One Ring; for the power of the Elven-rings was very great, and that which should govern them must be a thing of surpassing potency; and Sauron forged it in the Mountain of Fire in the Land of Shadow. And while he wore the One Ring he could perceive all the things that were done by means of the lesser rings, and he could see and govern the very thoughts of those that wore them.*

**-The Silmarillion: Of the Rings of Power and the Third Age**