G-SYNC 101: Hidden Benefits of High Refresh Rate G-SYNC


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Often overlooked is G-SYNC’s ability to adjust the refresh rate to lower fixed framerates. This can be particularly useful for games hard-locked to 60 FPS, and has potential in emulators to replicate unique signals such as the 60.1Hz of NES games, which would otherwise be impossible to reproduce. And due to the scanout speed increase at 100Hz+ refresh rates, an input lag reduction can be had as well…

Blur Buster's G-SYNC 101: Input Lag & Optimal Settings

The results show a considerable input lag reduction on a 144Hz G-SYNC display @60 FPS vs. a 60Hz G-SYNC display @58 FPS with first on-screen reactions measured (middle screen would show about half this reduction). And while each frame is still rendered in 16.6ms, and delivered in intervals of 60 per second on the higher refresh rate display, they are scanned in at a much faster 6.9ms per.



1090 Comments For “G-SYNC 101”

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tbhee
Member
tbhee

For AMD is it correct to set the framerate limiter through Radeon Chill Min and Max = cap?

And for a game that does have an ingame limiter would it be overkill to be using that as well
as Chill?

Gsyncmasterace
Member
Gsyncmasterace

Hey there 😀

Do you guys know if there is any difference between gsync and a fixed refresh rate with an unlimited framerate ( lets say 400 fps at 240hz ).

Agitatio
Member
Agitatio

Hello again, have another question to bother you with.

So I have 240Hz G-SYNC monitor, and I have G-SYNC and VSYNC enabled in NVCP.
I don’t trust in-game FPS limiters due to too much variance and some games having very weird frame pacing or just bad FPS limiters, which both require too much trial and error.

So considering that, I’m left with limiters like RTSS and NVCP. Which both should be equal by this point when it comes to input lag. So I was wondering if using those kind of limiters is still superior to having VSYNC engage when hitting ceiling, as they can still add up to 1 frame of additional input lag. And I also noticed that input lag difference is not that drastic in some of your comparison graphs for 240Hz with limit and without.

If FPS lock still advisable in my case, do you have a recommended “better safe then sorry / should affect 99.9% of cases” number to lock below refresh rate? Similar to your -3 and ULL overkill of -15(for 240Hz that is)?

vin3780
Member
vin3780

Hi,

I have a NVIDIA GPU and am looking to get a 240hz monitor but it only has Freesync but is G-Sync compatible. So I’m wondering, are the FreeSync monitors with the G-Sync Compatible certifications functionally identical to monitors with native G-Sync modules? Are these tests showing G-Sync and V-Sync ON with capped frames input lag numbers are comparable to V-Sync OFF uncapped frames input lag numbers still applicable to these monitors without native G-Sync?

infraa
Member
infraa

Hello! I got 144 HZ G-sync.

I have a problem when I am playing Rocket League.

Having Vsync NVCP controlled for app and g sync on and in game vsync off, with cap 141 fps, the game goes fine, too smooth!

But if i disable VSYNC from the game, is not smooth anymore, it looks like 60 fps but having 144 fps. If i uncap and it reach to 250 fps is the same, still no smooth.

Its only happens in RL idk why. I tried disabling G-sync and nothing happened.

What could it be?

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