Yeah so don't laugh I realise this is stupid...

Chris.

Chris.

Chris.

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3 Oct 2010
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477
You know when you run a game in a window, and its still at the same res, however the GPU seems to handle it much better and FPS seem to be better?

If you had one 27" screen and one 32" screen, at the same res, would there be any difference in FPS or GPU load?

I know it sounds daft, but I only mention this as there is a noticeable difference in FPS between my 32" LG screen and my 22" Samsung TV? Even if they are both at 1920x1080!

Am I imagining things?
 
Not a predicament just an observation. Seems to be running smoother on smaller screens even though im still at high resolutions.

Also, quick edit to above, the Samsung isn't a TV, its a monitor from the PC downstairs lol
 
No, should not make any ACTUAL difference what size the screen is when using the same resolution assuming all things are equal.

What you perceive could differ though, depending on panel type, refresh rate and otherwise.
 
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The screen size makes no difference.

1920x1080 is the same on a 22" screen as a 52" screen.

Your perception must just be different.
 
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The screen size makes no difference at all. Only the resolution matters.
What might make a difference as Sin_Chase says, is the monitors used. It could be that one is simply worse - though I'd be surprised to see a very noticeable effect with modern monitors. Which is better, the 32" LG screen or the 22" TV?

One thing: are you running the game full screen on one monitor, and in a window on the other? Running games in windows sometimes has significantly poorer performance (depending on the game).
 
use fraps so you can be certain the FPS are the same on both screens (they will be) unless you have something strange setup within the graphics driver. maybe one profile for one TFT and a different profile for the other.

Sounds like input lag to me
 
Same res = same number of pixels. Assuming same gfx settings = same GPU workload and thus same frame rate.

Possible causes for perceived difference:
One is running windowed and one full screen.
Different input lag between screens (mistaken as frame rate difference)
Different response rate for screens (mistaken as frame rate difference)
Issues with different connectivity methods to the screens due to your gfx card / drivers.
The ability to see imperfections easier on a larger screen? Does the smaller one look "better" which you think is also "faster" / "smoother"?
Mental instability? ;)
Blindness? :p
 
Smaller screens at the same resolution and FPS as a larger screen do provide a smoother playback.
Just as a larger screen at the same resolution and FPS as a smaller screen provide a less smooth playback.

I shall attempt to explain why.
If say you have a movie 30FPS 1080p.
You have 2 screens - at the extreme end of each other - 1 cinema screen 30 foot wide, and 1 monitor 30cm wide (approx 15" monitor")

Take a shot that pans across the screen in 1 second.
Each Frame on the cinema screen will be displayed 1foot appart. Whilst in contrast the monitor will have a new frame every 1cm.

This results in smoother motion on the smaller display, as the object will have "traveled" a shorter distance in the same time period.
Yes distance from screen, how much of the display is in your view all comes into play. Next time you are at the cinema, pay attention you will notice how jerky things look. - this problem is often reduced by motion blur however.

To make matters worse, they higher the resolution a screen is, the higher the fps is needed to have a comparatively smooth motion to a lower res screen of the same size, however that's another subject for another day.

To sum it up, FPS on a larger screen will be the same as a smaller one, however it will appear more jerky on the larger screen.

The bigger your screen physically the more fps you need.
The higher resolution your screen is, the more fps you need.
 
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errm, not necessarily.

it all depends on viewing distance as well.

also, you comparison with cinema is not valid. cinema uses 24frames per second and most screens of PC's or HD ready sets will not support this and natively interpolate up to 60 frames per second.

what i was going to add to the mix is that one of your screens might be doing some funky stuff with 100Hz ect. make sure you have turned all that rubbish off.
 
animatesmall.gif


animatelargegif.gif


2 Animated gifs above, each with the same pixel ratio, and the same FPS.
The small one appears smoother, although it runs at the same fps as the larger. (your mileage may vary if your pc cant keep up)

If your concerned about the example about the cinema running at 24fps, then just change the stats to a 24foot wide screen, vs a 24" wide screen, the same applies, 1 foot per frame vs 1" per frame.

The point remains the same, a larger screen at the same fps will give a less fluid display to a smaller one. It's just a fact.

How much noticeable difference between a 27" and a 32" screen I cba to work out. Some people will notice it, others not.
Some people have very poor eyesight/brainpower and cant differentiate many fps, whilst others can easily distinguish the difference between 30/60/100/200/500fps etc.
 
you didn't understand.

viewing distance plays a part. as a 100ft screen 2 miles away...

but thats talking semantics.

it all depends on how your brain picks out detail. to me i can see the change in frames on both of those images. the smaller does not look more smooth or fluid. the large one looks "faster" but not less fluid.
 
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