I think you're conflating modern web browsers and the 'modern' (read 'bloated') web. I'm guessing the most recent version of Firefox or Chrome will run on very old hardware assuming the OS itself supports the hardware. The real question, which is what you may be trying to ask, is what's the oldest hardware that will handle a modern bloated website. 3rd gen i5 on a 2012 Thinkpad struggles, but works fine, so you may w…
Should comfortable fit under 200.