08-04-2015, 12:48 PM
DrHouse64 Wrote:I see, thanks. So I suppose it introduces some minor input lag.
"Minor" heh. Motion interpolation introduces far more input lag than any other kind of postproc a display system can do. Turning it on while gaming is a bad idea.
Note higher refresh rates don't just improve motion quality by allowing for motion interpolation. Higher refresh rate panels often have lower response times which result in less motion blur. Although the two aren't technically intertwined they are related since response times are a major limited factor for panel refresh rates. Also higher panel refresh rates often come with strobing/scanning backlights that operate at similarly high refresh rates which can further reduce motion blur.
Note that motion interpolation is pretty much exclusive to HDTVs. Although you can easily add it on PCs via postproc shaders. Quite frankly I'm surprised that neither nvidia or amd have integrated this feature into their drivers yet considering how easy it would be to market.
Strobing backlights are common in high end HDTVs these days and they're beginning to make their way into lower end models. But for computer monitors you usually need an nvidia 3dvision/lightboost capable monitor (only recently have they started making non 3D monitors that support lightboost) and a recent nvidia graphics card since the strobing is software controlled. There are hacks starting to come out to use the feature on AMD cards but they're not as stable right now as Nvidia's implementation. We are also starting to see the first monitors that support hardware controlled backlight strobing which is better and works on any graphics card. Behold 240Hz backlight strobing on a computer monitor: http://www.amazon.com/LG-Electronics-24GM77-24-Inch-LED-Lit/dp/B00P0EOX1S
Edit: Oh and apparently Nvidia's G-Sync controller has built in strobing backlight support as well. With an even better implementation than lightboost.
Edit 2: Oh wow. So apparently G-Sync not only supports variable panel refresh rates but variable backlight refresh rates too. Although you can only turn on one or the other at a time. They should set it up in the future to automatically switch to VSB (variable strobing backlight) at >=90fps and VPR (variable panel refresh) at <90fps. That would maximize motion quality regardless of framerate.