understanding Hertz a monitor runs at...

[fitness88]

Can someone please explain what the relationship the Hertz a monitor runs at has to do with frames per second or the limitation of FPS.

 

Thank you.

[Svend_Dellepude]

If you have a game fps of 120, but monitor runs at 60Hz you will effectively only have 60 fps since your monitor only refreshes the screen 60 times per second.

So game output 60 frames that you never see.

If you on the other hand have game fps of 30 on the same monitor you will effectively have 30 fps. Monitor refreshes two times on the same picture.

So the higher the frequency of your monitor the more fps you can get.

85Hz ( or 75, don't remember now) is considered flicker free for the majority of people, but your eyes updates much faster.

There has been a widespread misunderstanding around that people were not able to see more than 30 fps, which is a complete joke.

Edited January 24, 2017 by Svend_Dellepude

[fitness88]

If you have a game fps of 120, but monitor runs at 60Hz you will effectively only have 60 fps since your monitor only refreshes the screen 60 times per second.

So game output 60 frames that you never see.

If you on the other hand have game fps of 30 on the same monitor you will effectively have 30 fps. Monitor refreshes two times on the same picture.

So the higher the frequency of your monitor the more fps you can get.

85Hz ( or 75, don't remember now) is considered flicker free for the majority of people, but your eyes updates much faster.

There has been a widespread misunderstanding around that people were not able to see more than 30 fps, which is a complete joke.

 

So your FPS cannot exceed the refresh rate [htz] of your screen, correct?

Not sure I get the significance of refreshing 2 times on the same picture [60htz divided by 30 FPS = 2 refreshes].

[razo+r]

So your FPS cannot exceed the refresh rate [htz] of your screen, correct?

Not sure I get the significance of refreshing 2 times on the same picture [60htz divided by 30 FPS = 2 refreshes].

 

You can have more fps than Hz by disabling stuff like vsync or so, but it can cause screen tearing which is not nice..

[fitness88]

You can have more fps than Hz by disabling stuff like vsync or so, but it can cause screen tearing which is not nice..

 

Thanks for the clarification razo+r.

[fitness88]

So I think I need to ask the question again if Svend_Dellepude isn't correct...what the relationship the Hertz a monitor runs at has to do with frames per second?

[Rangi]

Svend is correct, your monitor cannot refresh/display more than than it's hertz. Your pc can be sending more frames than your monitors hertz but they will not be displayed (screen refreshed) more than your monitors refresh rate (hertz). So you may as well cap your fps at your monitors refresh rate (hertz) or your pc is doing unnecessary work.

[Barefoot Bandit]

It's also nice to have the fps divide nicely into the refresh rate, otherwise, dropped frames and juddering may result.

 

Z...

[JG14_Smil]

This is a great thread and thanks to Sven for the explanation. I run a multi monitor setup, so I've always tried to optimize for the slower FPS. It is amazing how subjective the settings are and I even find settings that I used to dislike may work better now.

 

I used to cap DCS at 30, but it now causes very bad stutters for me. My best results are with a 59 DCS cap and 60 hrz on my monitors. I used to love, then hated V-sync, especially the half-rate adaptive, but I now use the half-rate option with good results. As I read of the performance issues people have, even in single monitor, I thank my lucky stars my system runs like it does.

 

I note that getting DCS updated along with Windows 10 was a $#@, but all is well now. All I need now to complete my setup is for SoftTH to work in DX11 and get back to full screen and bezel management.

 

Best wishes,

[Svend_Dellepude]

So your FPS cannot exceed the refresh rate [htz] of your screen, correct?

 

Correct! :thumbup:

 

Not sure I get the significance of refreshing 2 times on the same picture [60htz divided by 30 FPS = 2 refreshes].

 

just an example to explain that it will always be the lowest of the two numbers that will be your actual fps.

[fitness88]

What Svend_Dellepude stated originally made sense to me but then I read razo+r post and he mentioned "You can have more fps than Hz by disabling stuff like vsync". This is what is confusing me because I see my FPS on the screen sometimes much higher than my 60 htz rate.

I remember an autoexec.cfg file used to cap FPS, is that what you are referring to?

Thanks all for the additional info.

Edited January 26, 2017 by fitness88

[Svend_Dellepude]

It's true that your videocard can output more fps than your screen will show you.

But as I wrote in my first post.

Your video card can put out 12billion fps but if you have a 60Hz monitor your will have 60 fps.

Lowest number of the two will be actual fps.

It's really that simple.

 

You can just enable V-sync on your card or in the game and then you cap the game fps to your monitors refresh rate.

[fitness88]

It's true that your videocard can output more fps than your screen will show you.

But as I wrote in my first post.

Your video card can put out 12billion fps but if you have a 60Hz monitor your will have 60 fps.

Lowest number of the two will be actual fps.

It's really that simple.

 

You can just enable V-sync on your card or in the game and then you cap the game fps to your monitors refresh rate.

 

And that's exactly what I ended up doing...

Thanks again for the info!

[Bufo]

This is what you are looking for: Hz fps v-sync explained

[fitness88]

This is what you are looking for: Hz fps v-sync explained

 

I read a bit of it...looks very interesting and will read the rest later, thanks.

[Svend_Dellepude]

^^ great link!

[fitness88]

Re link: does DCS support triple buffering? My Nvidia card does.

Edited January 29, 2017 by fitness88