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Forums - Gaming Discussion - Why 30 or 60fps, but never 48, 50, etc... ?

Simple and stupid question, but why ?

When we see a game which struggles to keep 60 and run instead between 48 and 57, why devs don't lock it at 48 or 50 ?



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Most TVs and monitors have a fixed refresh rate, often 60 Hz these days.

If a game runs at, say, 48 FPS, some frames would be doubled every second, and some won't. The resulting video would seem more jittery compared to 15, 30 and 60 FPS, where frames can be doubled or quadrupled evenly.

That's why FreeSync and G-Sync monitors are a big deal to enthusiasts, they avoid this issue for their refresh rates are exactly what's being rendered.

Edit - in certain hardware configs, some games could still feel more fluid at, say, unlocked at 40 FPS than locked at 30 FPS. But that relates more to uneven frame times, and not the framerate itself.

Last edited by haxxiy - on 26 May 2019

 

 

 

 

 

haxxiy said:

Most TVs and monitors have a fixed refresh rate, often 60 Hz these days.

If a game runs at, say, 48 FPS, some frames would be doubled every second, and some won't. The resulting video would seem more jittery compared to 15, 30 and 60 FPS, where frames can be doubled or quadrupled evenly.

That's why FreeSync and G-Sync monitors are a big deal to enthusiasts, they avoid this issue for their refresh rates are exactly what's being rendered.

But every modern TV today are not at 100 or above ?



Current PB on Secret of Mana remake : 2h27 (2nd)
Strongest worldwide achievement on TGM : 1st European S13 rank
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Current PB on Power Ranger (Game Gear) : 10min06 (World Record)

Non-geek activity : ThermalHungary

Amnesia said:
haxxiy said:

Most TVs and monitors have a fixed refresh rate, often 60 Hz these days.

If a game runs at, say, 48 FPS, some frames would be doubled every second, and some won't. The resulting video would seem more jittery compared to 15, 30 and 60 FPS, where frames can be doubled or quadrupled evenly.

That's why FreeSync and G-Sync monitors are a big deal to enthusiasts, they avoid this issue for their refresh rates are exactly what's being rendered.

But every modern TV today are not at 100 or above ?

They would be at 120 Hz, but no, they are not.  60 Hz is still the standard for economy models.  If you're seeing a really nice TV selling for a huge discount you might want to check that feature to make sure you are getting a good unit.  Not that my eyes can tell the difference between 1080p, 4k, 60 Hz or 120Hz, or whatever, but some people really care about these things.



Amnesia said:
haxxiy said:

Most TVs and monitors have a fixed refresh rate, often 60 Hz these days.

If a game runs at, say, 48 FPS, some frames would be doubled every second, and some won't. The resulting video would seem more jittery compared to 15, 30 and 60 FPS, where frames can be doubled or quadrupled evenly.

That's why FreeSync and G-Sync monitors are a big deal to enthusiasts, they avoid this issue for their refresh rates are exactly what's being rendered.

But every modern TV today are not at 100 or above ?

Some monitors are 144 Hz. Plasma TVs were claimed to be 600 Hz but that's not your everyday performance.

But most are locked to the conventional 24, 30 and 60 Hz. Sometimes you have 50 Hz. It depends on the resolution and the model.



 

 

 

 

 

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Amnesia said:
haxxiy said:

Most TVs and monitors have a fixed refresh rate, often 60 Hz these days.

If a game runs at, say, 48 FPS, some frames would be doubled every second, and some won't. The resulting video would seem more jittery compared to 15, 30 and 60 FPS, where frames can be doubled or quadrupled evenly.

That's why FreeSync and G-Sync monitors are a big deal to enthusiasts, they avoid this issue for their refresh rates are exactly what's being rendered.

But every modern TV today are not at 100 or above ?

While TVs with 120Hz output have existed for quite a while already, TVs that actually accept 120Hz input only came out since 2018. Before all they did is take a 30 or 60Hz input and calculate in-between frames to pump up the output to 120Hz.



Many (maybe all) TV manufacturers make up marking terms like "super 120" to refer to some (likely not very effective) enhancement techniques that they build in to the TV. This is done to make the consumer think that their TV is running at something higher than the 60hz that it actually is.

Not that there aren't 120hz units out there. But, just because you see 120 or 140 on the marketing materials somewhere does not necessarily mean the TV is running at that rate.



I used to play many games with vsync and triple buffering with around 38-45fps, by far better than any 30 fps locked game. so I don't really know why they don't do that.



Tv Panels have a refresh rate of 60hz or 120hz (higher end Tv's) so console games have always been locked at 30 or 60. Those games that run with a variable refresh rate might showcase some screen tearing. Although on my x930e that has a 120hz panel I haven't noticed any screen tearing for most games.

Also there is the output side of things where consoles beside Xbox one x can't output a refresh rate other than 60hz.



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You have to also consider V-Sync. If the frames don't divide nicely into the refresh rate (ex. 30fps→60 or 120Hz), visual problems occur (like screen tearing). So, locking it at those frame rates wouldn't really benefit the game.

That's also another reason some in the PC community (which a few like to call 'elitists') brag about their monitors/refresh rates (especially if they have beefy rigs). It isn't necessarily elitism (at least, not always), but a good feeling about a scientific superiority.

Last edited by CGI-Quality - on 27 May 2019