Originally Posted by fateswarm
The low hz/high fps combo is true that it lowers tearing though it's not very well understood why (since tearing doesn't go away completely or some people are simply insensitive in noticing tearing). I suspect it works because since the fps is so high, even if the frequency of refresh is able to tear it, it's not able to do it as profoundly since by the time it is about tear it, it is more likely that a whole frame (or a more complete frame) might be in place (it might not work exactly like that).
edit: All of that provided vsync is off.
Graphics cards don't perfectly deliver a flat 60fps. Within one second, there are 60 different frames that are rendered at different latencies. When you average those latencies, you get a ~60fps/16.7ms average. Realistically, the the latency between each frame will be something like 16.65ms, 16.8, 16.5, 16.667, etc., and that could lead to some screen tearing without the use of frame synchronization technologies, which basically forces the frames to be delivered at the refresh rate, and thus getting rid of tearing. The downside is that whenever you're trying to synchronize frames, input lag is inevitable, although the lag is less noticeable the higher fps you are able to get.
So while G-Sync is preferred for your typical gaming rigs, it isn't necessary. If you look at the demonstration videos, you'll see that they only demonstrated G-Sync with slow moving objects, where it's effects are the easiest to see. I'm sure that if you're plowing through some FPS games, or playing something that's pretty intensive, the ability to see the benefits of G-Sync would lower. In other words, there aren't many people who looks at a pendulum for 10 minutes saying, "Oooh, it...moves so fluidly." Something like Lightboost/Strobelight, a decent frame limiter (like what's on MSI AB/ RadeonPro), and a graphics card that can keep up the frames is all you really need, imo.
Originally Posted by CallsignVega
While that is somewhat true, it was regarding 4K monitors. 4K monitors are demanding and are only 60 Hz, a place G-Sync would be extremely beneficial. On 120+ Hz monitors, not so much.
Afaik, 4K@60Hz only works on ASUS monitors with the use of two DP (Bandwidth constraint). I'm pretty sure G-Sync only works on a single DP. I'd just wait for 4K and DP to mature before talking about G-Sync on 4K, unless you just want to be on the bleeding edge of tech. It'll probably be a couple years until we see some G-Sync supported 4K monitors anyways. When that time comes, I'm sure that GPUs will be able to render that resolution pretty well, especially for people like you who have quad Titans, which would lower the usefulness of G-Sync. Plus, most game texture resolutions are still in the 1024-2048 ballpark. It'll be a while until 4096 becomes the norm, unless you install some custom textures. Although texture resolutions isn't uber important to some, I'm just throwing it out there.
I just see G-Sync as a placeholder until GPUs can catch up to rendering at high resolutions and/or high refresh rates. /tangent (sorry for being off topic)