Will 120FPS work on 60Hz?
The two terms actually aren't too different from eachother. A loose definition of Hz is “per second”. A 60Hz monitor can display any framerate up to 60fps with no issue.It can't. A 60Hz TV can't display a video at 120FPS, it will only be showing half of the frames, at 60FPS.They need to be be pretty much exactly 120Hz over HDMI. Forget the other refresh rates, 144Hz and beyond are PC refresh rates for PC connected via Display Port.

What is the max FPS for 60Hz : 60fps

No, a 60Hz monitor can only display up to 60fps. Same goes for a 75Hz monitor displaying up to 75fps, or 144Hz displaying 144fps and so on. However you can still play a game with uncapped fps as this mitigates input latency (feels more reactive) even if your monitor does not display the particular fps. Hope that helps!

Can 60Hz run 200 FPS

Monitors will typically be assigned a refresh rate. If your gaming computer is running a game at 200 FPS, but your monitor only has 60Hz refresh rate, then you might as well be running the game at 60 FPS. You won't be able to see the difference.

Can 1080p run 120 FPS : Yes you can get 120fps at 1440p or 1080p with this monitor, though this is not a 4k monitor, so do not expect that.

The human brain is not a single minded computer that has to process one frame at a time, you catch details independently and alongside processing how something is moving and those two happen at different rates. 120Hz is absolutely smoother than 60Hz and you can absolutely tell the difference.

In theory, a higher refresh rate should equal a better quality picture because it cuts down on blurriness. A 120Hz display decreases the appearance of "film judder" or blurring that might be noticeable to some on a 60Hz screen. Improvements beyond a 120Hz refresh rate are unnoticeable.

Can 60hz beat 144Hz

The more frames there are per second, the less screen tearing and more clarity there will be when there is rapid movement across the screen. So overall, 144Hz is a better experience than 60Hz so moving from 60 to 144 will always be an improvement not a downgrade.Monitors will typically be assigned a refresh rate. If your gaming computer is running a game at 200 FPS, but your monitor only has 60Hz refresh rate, then you might as well be running the game at 60 FPS. You won't be able to see the difference.Refresh rate won't hamper frame rate

Of course, how you play your games is entirely up to you, and there are situations, for example on a gaming laptop, where you may have a low refresh rate display some of the time and a high refresh rate display at others.

No; they are two separate things. Remember that FPS is how many frames your gaming computer is producing or drawing, while the refresh rate is how many times the monitor is refreshing the image on the screen. The refresh rate (Hz) of your monitor does not affect the frame rate (FPS) your GPU will be outputting.

Is 120 FPS overkill : It's just as noticeable in a "casual" game as it is in a "competitive" one. well, 120fps reduces latency quite a lot compared to 60fps. So you basically get faster reaction time, and this is worth a lot in competitive action games. Single player games are usually much more forgiving.

Does 1920×1080 support 120fps : as long as the monitor has HDMI 1.4b and has 1080p @120hz exact (standard timings) in the edid information then yes it will work.

Is 144Hz noticeable over 60Hz

Yes, there is a noticeable difference, even on the desktop.

The human brain is not a single minded computer that has to process one frame at a time, you catch details independently and alongside processing how something is moving and those two happen at different rates. 120Hz is absolutely smoother than 60Hz and you can absolutely tell the difference.A higher refresh rate monitor will not do anything to the eyes in terms of making it worse or better, but there is a difference. The difference is when things move on the screen.

Is 60 Hz ok for gaming : The answer is that it depends on the games you play, the specifications of your computer, and your own tastes. Most casual gamers may easily get by with a 60Hz display, which is regarded as the industry standard refresh rate. Most games that aren't very taxing on your PC may be played smoothly thanks to it.