If I am not mistaken the GTS 450 should be more than powerful enough especially by Linux standards.
Brave is a great browser and the only chromium one I would ever use but mentioning it on Reddit OR Lemmy will cause you to get mass downvoted unfortunately
The browser lets you customize the dashboard so you can make the browser look as clean or minimal as you want with almost no distractions
Biggest issue I have with Firefox is that some websites can be broken but 99.9% of the time this is not Firefox’s fault and the only one to blame is lazy developer's
Firefox out of the box doesn’t come with specific features that the websites that I use need which is why I haven’t made the switch yet, biggest one is that Firefox doesn’t work with Keychron’s in browser software that is used to customize their keyboards. Again this is not Firefox’s fault because Firefox didn’t adopt the feature because of security concerns which is completely valid and even commendable.