There is definitely a noticeable difference between 144Hz and 240Hz. Higher refresh rates obviously mean smoother gameplay and that is also the case when going from 144Hz to 240Hz. Although there is a noticeable improvement, it isn’t as huge as an improvement compared to the jump from 60Hz to 144Hz. Note that you need to have ridiculous frame rates in order to take proper advantage of 240Hz monitors and most game engines don’t even support it yet, as of 2017.
You’ve probably heard it already. People telling you to get a 144Hz monitor and how awesome they are. They are indeed awesome, but after some research, you’ve found that there are also 240Hz monitors. If it’s an EIZO monitor, it’s not true 240Hz, but instead true 120Hz with each frame being displayed twice without interpolation. True 240Hz monitors are already here and they are indeed awesome. That statement is valid, of course, if the game you’re playing can handle 240 frames per second. If that’s the case, then the gameplay will look smoother than anything you’ve ever seen.
The visual improvement is definitely there when upgrading from a 60Hz monitor to 240Hz monitor – gameplay will be four times as fluid. There’s also a good amount of improvement when going from 144Hz to 240Hz. The improvement is much greater in the former situation, than in the latter scenario. So if you´want as fluid gameplay as possible and your game can handle 240fps, then you should definitely get a 240Hz monitor. But that’s only if refresh rate is the only thing you care about. Normally, you would consider other features as well, such as panel type and adaptive sync technology.
If you’re still curious about 60Hz, 120Hz, 144Hz and 240Hz refresh rate monitors, check out the video below, which will give you a visual presentation of each refresh rate so that you can compare them yourself and conclude if 240Hz vs 144Hz is worth it.