What's the best amount of Hz?

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I was playing Destiny online yesterday night with a couple of friends and the matches annoying. Aside from connections, there was something really strange going on: one of those two friends of mine was playing with my "same" connection, meaning we have the same ISP subscription (so same network download & upload speed), same router and we live in the same building (so we're equally far from the nearest ISP's network node). We even have the same router's ports opened, but every time we were having hard times in game, he was receiving game images one second or so before me.

The only thing that differs is the TV: I have a 40" Samsung Full-HD and he has a 50" Hisense LTDN50K680XWSEU3D. So I remembered about frame rate, Hz and response time and googled everything. I found that TVs with higher Hz are better cause they show smoother images BUT the human eye only detects changes about every 1/25th second (so it's near 80Hz).

After this long premise, my question is simple: what's the best Hz amount for a perfect gaming experience? My friend's Hisense TV has 400Hz and a response time of 6.5ms. I think that something like 100Hz and 20ms of response time would be perfect for console gaming but I'm not sure.



Best Answer

You are right that the difference is probably in the TVs, but you are looking at the wrong figures.

The refresh rate (measured in Hertz (Hz)) is the number of times per second that the image on the screen can change. It's debatable whether this may have any influence on the apparent smoothness of the gameplay, but it certainly won't account for a difference in time to screen in the order of a second.

The response time (measured in milliseconds (ms)) is the time that it takes the actual LCD panel in the TV to change colour, after being commanded to do so. A slow response time will lead to "ghosting" on the screen, where fast-moving objects leave a trail. A millisecond is a thousandth of a second, so this cannot account for a difference of a second.

Modern televisions do a lot of image processing - partly to decode the incoming signal and convert it into the form that they need, partly to scale it to the right resolution, and partly to "improve" colour saturation, contrast, etc.. This processing takes some time, and can often add delay in the order of seconds. There are two things that you can do to reduce this:

  1. Many TVs have a setting which removes a lot of this processing and thus reduces the delay from input to screen. Look for a "Game" setting, or possibly a "PC" setting, or if nothing appropriate is available, try turning off as many processing options as possible. Be warned that doing this (and leaving it this way) will probably make your picture look worse for TV shows and films.
  2. Are you and your friend using the same method of connecting your consoles to your TVs? I'm not familiar with what ports an XBox One has, but if (for example) there are both HDMI and DisplayPort outputs, it's possible that one introduces more delay than the other.
  3. If you are planning to replace your TV, then when looking at reviews look for mention of the delay from input to screen. Typically reviews that are concentrating on TV or film playback won't mention this, because for TV or film it doesn't matter if you see everything a second later; but reviewers focussing on performance for gaming will surely make some comment.



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What is a good number of Hz?

When it comes to monitor refresh rates, bigger is definitely better. However, 60 Hz represents a bare minimum while anything over 120 Hz is more appropriate to more demanding users. More modest screens with a 75 Hz refresh rate offer a middle ground.

Is 240Hz worth it over 144Hz?

In short, 240Hz makes fast-paced gaming incredibly smooth and fluid. However, keep in mind that the jump from 144Hz to 240Hz is not nearly as noticeable as going from 60Hz to 144Hz.

What Hz is best for eyes?

A higher refresh rate means a smoother-looking screen that's easier on the eyes. So, if you're trying to ease your eyestrain, a refresh rate of 120 Hz is optimal.



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