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.



125 Comments For “G-SYNC 101”

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pervyjutsu
Member
pervyjutsu

Should “Reduce Buffering” option in Overwatch be enabled or disabled? Many competitive/pro players suggest having reduce buffering on to get higher framerate and reduced input lag but would having this option on have a negative effect on G-SYNC?

Also I recently upgraded my system to a i7-8700k and 1080ti. I usually sit at a steady 300fps on Overwatch now and use a 240hz monitor (Asus PG258Q). Would G-SYNC be worth using in this case?

shashank066
Member
shashank066

Excellent article. Just like other on Blur Busters. It was such detailed that, I had to read it twice to understand perfectly. Thanks for this.

bcbuse
Member
bcbuse

First, this is the best Gsync/Vsync information on the internet. I appreciate the effort you put into this, well done.

I read a comment you posted somewhere that ‘technically’ the absolute least input lag would be with Gsync Off + Vsync Off + Framerate upcapped(getting at least 2x the monitor refresh rate). Can you approximate how much less input lag that would be versus Gsync On + Vsync On(NVCP) + Framerate capped 2 below monitor refresh rate?

daniel8747
Member
daniel8747

to clarify: with fps capped 2-3 fps below monitor refresh rate, do i still need to have v-sync enabled?

franman
Member
franman

Based on the graphs, you’ve only shown the hertz comparison with both G-sync and V-sync enabled + frame cap. If you disabled V-sync would I get even less input lag?

NOTE: I’m going for a fighting game locked at 60 fps on a monitor that can be overclocked to 165Hz; would 165Hz: G-sync w/ V-sync OFF (NVCP) + 60 fps limit provide the most optimal performance and experience for a fighting game?

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