G-Sync vs FreeSync: Which is better?

edited August 2023 in PC Tech

When buying a new PC gaming monitor, you'll want smooth, high-resolution gameplay. Both NVIDIA G-Sync and AMD FreeSync improve your game performance by reducing visible tearing caused by frame rate fluctuations.  

A PC gamer who has dealt with screen tearing knows how frustrating it can be. Lag and parallel lines detract from your gaming experience. NVIDIA and AMD use Adaptive-Sync technology to solve this problem. They improve monitor performance by matching your screen's refresh rate with your graphics card. Adaptive-Sync is critical for GPU-intensive games where your computer might not be able to render at higher frame rates. 

Now, even gaming laptops are getting in on the action. If image quality and performance are your top goals, G-Sync or FreeSync will suit you. Based on your NVIDIA or AMD graphics hardware, you'll select the same Adaptive-Sync brand. 

Choosing monitors and graphics cards can be tricky because of the vast choices. It's challenging to know which approach is best for your system.  

Let's look at each one to discover which one is best for you. 

What is Screen Tearing? 

Games render each frame individually, and the rate varies widely depending on your PC's graphics card (GPU) processing power. If your monitor has a fixed refresh rate, screen tearing occurs when the display's refresh rate surpasses the GPU's retention capability. These unattractive tearing patterns develop when a fresh frame stacks on an existing one. Under stress, the GPU can only create incomplete frames.  

Adaptive-Sync tackles this problem as the monitor's refresh cycle syncs with the GPU rendering rate of each video frame. It syncs even if the rate changes. The monitor draws each frame before the video card sends the next one, eliminating tearing. Now, buffered frames aren't sent while waiting.  

As a result, the monitor refreshes once a new frame is ready to display. Adaptive-Sync improves the visual appearance of games and the fluidity of movement. 

The two Adaptive-Sync technologies are: 

  • FreeSync for AMD GPUs 
  • G-Sync for NVIDIA GPUs 

Display manufacturers meet their certification requirements. Both smooth out gameplay, reduce input lag, and prevent screen tearing. Generally, you can't mix and match the two technologies. It will depend on your GPU. Read on to discover the key differences between them.  


NVIDIA first released G-Sync to the public in 2013. G-Sync adjusts its output rate when the GPU speed is out of sync with the monitor refresh rate. G-Sync technology has an effective range of 30 Hz up to the maximum refresh rate of your display. So, if your graphics card pushes 60 frames per second, then the monitor shifts to 60Hz. Or, if the FPS count decreases to 30, the display changes to 30Hz. G-Sync solves the tearing problem while retaining responsiveness. 

G-Sync monitors usually cost more as they need hardware to support NVIDIA's technology. G-Sync requires a display port connection, but some newer displays allow HDMI capabilities. All support Low Framerate Compensation (LFC) for smoother gameplay. 

They come in three levels: 

1) G-Sync 

Certified monitors need a NVIDIA G-Sync processor. If the frame rate is below 30Hz, G-Sync doubles the refresh rate to improve tears. G-Sync is also effective at eliminating fading.  

Acer G-Sync monitors: 

2) G-Sync Ultimate 

G-Sync Ultimate can run at 144Hz or higher displays. It's perfect for high-end PC gaming and online competition. Low latency gameplay, calibrated sRGB/P3 support, and HDR support are all included. 

3) G-Sync Compatibility  

Now, FreeSync monitors which run on AMD can be G-Sync Compatible. NVIDIA certifies them to ensure you'll have a reasonable variable refresh rate (VRR). 

Acer G-Sync Compatible monitors: 

AMD's FreeSync technology 

Released in 2015, FreeSync is a standard developed by AMD for its variable refresh rate technology. It reduces screen tearing and stuttering when the monitor doesn't sync with the content frame rate.  

This standard is open for manufacturers and doesn't need any proprietary hardware. So it's popular as manufacturers can use it without paying royalties to AMD. But, some manufacturers only support the feature within a limited frequency range, reducing its effectiveness. G-Sync can work at 30Hz. 

FreeSync has three-tiered levels: 

1) FreeSync 

The most basic level supports HDMI 1.4 and DisplayPort 1.2a and runs at 60Hz. 

Acer FreeSync monitor: 

2) FreeSync Premium 

On top of the FreeSync tier, it adds Low Framerate Compensation (LFC). LFC automatically starts to prevent stuttering and tearing. When the framerate drops below the monitor's minimum refresh rate, it repeats frames to help games run smoothly. Plus, certification requires at least FHD resolution at a 120Hz refresh rate. 

3) FreeSync Premium Pro  

FreeSync Premium Pro adds HDR capabilities and low latency to the mix.  

Acer FreeSync Premium Pro monitors: 

Freesync vs. G-Sync comparison 

FreeSync's lower cost for supporting displays makes it a viable alternative to G-Sync. Due to its open technology, FreeSync monitors are more common than G-Sync displays. 

All G-Sync levels offer Low Framerate Compensation (LFC). LFC helps games run smoothly by repeating frames when the frame rate is below the minimum. But, only AMD's FreeSync Premium Pro level offers LFC support. 

Many gamers play without Adaptive-Sync. Faster refresh rates are more critical to your gaming experience than Adaptive-Sync technology. The higher the Frames Per Second (FPS), the more realistic the experience. The new standard is a 60 or 120Hz monitor, which runs at 60 or 120 FPS. 

FreeSync offers a fixed "range" of framerates, so it's limited to manufacturer specs. G-Sync doesn't have these same framerate restrictions. So, you'll need to research FreeSync monitors' frame rates more than their G-Sync rivals.  

Since G-Sync monitors use the same NVIDIA-made hardware, they have low input lag. In contrast, FreeSync monitors are in the same position as standard non-adaptive monitors. It doesn't mean that FreeSync screens have higher input lag, but you should check reviews for an input lag measurement before purchase. 

Pricewise, AMD has a clear advantage over NVIDIA graphics cards. FreeSync would be more sensible if you're on a small budget.  

Which is better for HDR: FreeSync or G-Sync? 

Both AMD and NVIDIA have released new iterations of their Adaptive-Sync technology for HDR. 

NVIDIA's G-Sync Ultimate monitors are "lifelike HDR" displays with: 

  • up to 360 Hz refresh rate  
  • G-Sync 
  • HDR 
  • expanded color capabilities 

AMD has approved FreeSync Premium Pro to provide a premium experience: 

  • at least 120hz refresh rate at FHD resolution 
  • SDR and HDR low latency 
  • LFC support 
  • HDR support with meticulous color and luminance certification 

G-Sync and FreeSync are the best on the market for quality. G-Sync Ultimate offers the best HDR support if money isn't a factor. 

G-Sync vs. FreeSync: Choose wisely 

A vast range of G-Sync and FreeSync monitors can fulfill any need. Pick the technology that works with your computer: G-SYNC if you have an NVIDIA graphics card, and FreeSync if you have an AMD graphics card. The amount of input lag or ripping separates the two standards in the first place. For those who don't mind slight tearing, the FreeSync standard is an ideal choice. Otherwise, choose a G-Sync monitor if you don't mind input lag and prefer smoother motion without tearing. 

Keep in mind that while any display will work with any graphics card, enabling G-Sync and FreeSync requires NVIDIA or AMD GPUs. So look at your graphic card first.  

G-Sync and FreeSync both deliver exceptional quality. So, due to the lack of technological differentiation, it will come down to other purchase preferences, such as: 

  • How much resolution can your GPU handle?  
  • Is high brightness important?  
  • How high should the refresh rate be?  
  • Do you want HDR and extended color?  

It's not just about which adaptive sync technology you use. Combining these elements impacts your gaming experience. In the end, the more you spend, the better your monitor will be. Ultimately, test a few different models to see which is right for you. 

Patrick Yu is a Senior Project Manager at Level Interactive and has 8 years of experience writing business, legal, lifestyle, gaming, and technology articles. He is a significant contributor to Acer Corner and is currently based in Taipei, Taiwan.


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