With a manual stock distro installation maybe, as the defaults are very conservative. But just install the "tlp" package (the laptop project) and the situation flips. At least that's my experience at work based on Dell Latitude laptops and Thinkpads T before. My battery life is way above my Windows using colleagues, and my fans are mostly off (unless big compilation or test runs) instead of mostly on. Of course it's very likely due to the anti-virus, but that's part of the corporate Windows experience nowadays.