Chrome or Chromium?

Ok, I would love to use Firefox, but it usually takes my whole PC down when it hogs the resources leaving me to push the power button. I wish Mozilla would fix this?

Chromium, at least it is open source, for some reason it does not like to load youtube videos. I even deleted the files from home and started fresh still the same.

So I am stuck with Chrome, not my favorite choice.

So how come videos work in Chrome but not Chromium? I thought they were practically one in the same, is Chrome more up to date then Chromium?