LCDs with high refresh rates

chickenbeef

chickenbeef

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I was under the impression that the refresh rate does not matter when it comes to LCDs, then i see that there are now 120HZ LCDs.

Is there much of a difference between a 120HZ LCD as opposed to a 60HZ one? I know the 60HZ one can render upto 60 FPS without any tearing and the 120HZ upto 120 FPS (So with Vsync turned on you won't get tearing, right?). The human eye won't notice a difference with anything over 30 FPS right?

Here --------->

So do you think it would be worth it to get a LCD with a high refresh rate or is it just a marketing scheme?
 
Worth it for video etc, especially video that includes a lot of high-contrast panning scenes.
 
120hz monitors can be used for viewing 3d content in particular.

Personally think it's rubbish that the human eye can't detect anything over 30fps. In gaming I see a BIG difference between 30 and 60fps.
 
It actually makes a difference when I watch footage from my video camera on my PC. There is major tearing, but as soon as I watch it on TV, the image is crisp and it's the refresh rates that make the difference.
 
So the only real plus is that there won't be any tearing when viewing video content

Nvidia 3D is nice but the glasses are quite expensive :eek:
 
3d in general is becoming more prevalent. Would be nice to future proof - but realistically by the time the technology becomes affordable i'll also be able to afford a 120hz monitor.
 
I am not sure that 30 FPS not being seen by humans is related to video games.

There is a massive difference between 30 and 60 FPS in games, even 60 FPS and 100FPS.
 
Get the 120Hz. The higher rate will make a difference, especially in games.
Note, dual-link DVI is needed since the top rating for the DVI interface is 1920x1080 @ 60FPS per link. Apparently USB3 video can beat this. :)

Now, give us a list of LCDs offering 120Hz.
 
120hz is mainly better for movies, since it is a multiple of 24, meaning that you can watch movies at the original 24fps without the 2:3 pulldown to convert them to 30fps that you have on 60hz screens. You also get the option of interpolation on 120hz TVs, but making a picture smoother by adding more frames doesn't always make things better, depending on how the movie is shot.

Unless you're some sort of hardcore gamer with a powerful rig who really needs >60fps, I don't see it being worth it in that regard atm. As prices come down, then obviously, but since the tech is new unless you've got money to burn imo it's better to get a T260 or 120hz HDTV, since the only way to get a 120hz monitor atm is a 22" on import, afaik, e.g.

Viewsonic

Samsung
 
Tearing is NOT the same as judder, the kind of artifact I described before.

The problem comes in with the rates at which film is recorded vs the rates at which your display is able to reproduce the recording.

For example, they'll film at, say, 24 fps. But your TV wants to display 60 frames per second (60Hz). So in order to keep things civil, it duplicates some frames (not all of them). This causes a problem, because some frames are displayed for longer than others (multiple cycles). In order to fix this, we'd need a TV that can duplicate ALL frames a FIXED number of times. Thus, it was decided that 120Hz would be a good compromise, because 120 is a common multiple of both 24 and 30.

So watching 24 fps video on a 120Hz TV will be much more fluid because each frame is duplicated 5 times. On a 60Hz TV, some frames are duplicated, others not, causing judder.

Tearing occurs when more than 1 (adjacent) frame is displayed at once. Thus we see part of one frame and part of the next frame. Obviously, unless these frames are identical (still picture), there could be some tearing.

For gaming, 120Hz only makes a major difference to, as people have said, technologies such as 3D gaming. However we still see framerate conversions. If your graphics card is only able to generate 24 fps, then you'll get identical problems to with video. However if your graphics card generates exactly 60 fps, even on a 60Hz display, you won't notice any judder. But your graphics card doesn't generate a fixed number of frames per second (unless you tell it to).

Ideally, we want a display that matches the rate (or a multiple thereof) at which the source can deliver frames. The nice thing about games is that you don't have a fixed framerate, it's dependent on your hardware. So you can beef up your hardware to achieve a better experience.
 
Pulldown happens on a 60Hz? Pulldown usually means adding an intermediate frame, which I don't think will be happening in this situation. The frame would just sit there visible for more than 1 LCD frame, but there's not intermediate frame being generated in the true sense of pulldown. I might be wrong. I usually am.

Rudimental said:
120hz is mainly better for movies, since it is a multiple of 24, meaning that you can watch movies at the original 24fps without the 2:3 pulldown to convert them to 30fps that you have on 60hz screens. You also get the option of interpolation on 120hz TVs, but making a picture smoother by adding more frames doesn't always make things better, depending on how the movie is shot.

Unless you're some sort of hardcore gamer with a powerful rig who really needs >60fps, I don't see it being worth it in that regard atm. As prices come down, then obviously, but since the tech is new unless you've got money to burn imo it's better to get a T260 or 120hz HDTV, since the only way to get a 120hz monitor atm is a 22" on import, afaik, e.g.

Viewsonic

Samsung
Click to expand...
 
TheRift said:
Pulldown happens on a 60Hz? Pulldown usually means adding an intermediate frame, which I don't think will be happening in this situation. The frame would just sit there visible for more than 1 LCD frame, but there's not intermediate frame being generated in the true sense of pulldown. I might be wrong. I usually am.
Click to expand...

Yup.
 
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