What is anti-aliasing? How it works, types explained, and the best settings to use

By Pranob Mehrotra Updated April 30, 2026

Anti-aliasing is one of the most common graphics settings in PC games, but it’s rarely explained in a way that actually helps you decide what to use. At its core, anti-aliasing (AA) is a rendering technique that reduces jagged edges, known as aliasing, in digital images. These artifacts appear because screens use a grid of square pixels that cannot perfectly represent diagonal or curved lines.

Anti-aliasing smooths those edges by sampling and blending pixel colors along object boundaries. In simple terms, it makes scenes look cleaner and more natural.

If you just want the best setting without the deep dive, here’s which option you should select:

Without anti-aliasing, edges in games can look rough and distracting, especially at lower resolutions. This is most noticeable in:

As resolution increases, these artifacts become less visible, but they don’t disappear entirely.

Aliasing happens because a pixel grid cannot perfectly represent smooth edges. Anti-aliasing reduces this effect by sampling surrounding pixels and smoothing the transition between contrasting colors.

Different techniques approach this in different ways:

Traditional techniques mainly target spatial aliasing, while newer ones also reduce temporal aliasing, such as shimmering and flickering in motion.

Here’s how the most common techniques compare:

FXAA (Fast Approximate Anti-Aliasing)

FXAA is a post-processing method that detects high-contrast edges in the final image and smooths them quickly. It has minimal performance impact but can introduce noticeable blur.

Use it if: You need a fast, low-cost solution.

SMAA (Subpixel Morphological Anti-Aliasing)

SMAA is similar to FXAA but takes multiple samples along detected edges, resulting in cleaner image quality with a modest performance cost. It sits between FXAA and more demanding methods, though it’s less common today as TAA generally delivers better results.

Use it if: You want sharper results than FXAA without the performance hit of MSAA or SSAA.

TAA (Temporal Anti-Aliasing)

TAA uses data from previous frames along with motion vectors to smooth edges over time. It offers a strong balance between quality and performance and is widely used in modern games.

Use it if: You want the best all-around option.

MSAA (Multisample Anti-Aliasing)

MSAA samples multiple points within each pixel to improve edge quality, but it mainly affects geometry edges and not shader or texture aliasing. It is effective but demanding and less common in newer games.

Use it if: You’re playing older or well-optimized games.

SSAA (Supersample Anti-Aliasing)

SSAA renders the scene at a higher resolution and downsamples it to your display. This produces excellent image quality but comes with a heavy performance cost.

Use it if: You have a powerful GPU and want the best possible visuals.

DLAA (Deep Learning Anti-Aliasing)

DLAA uses the same deep learning model as Nvidia’s DLSS, but focuses purely on anti-aliasing instead of upscaling. It delivers very high image quality with less blur than TAA.

Use it if: You have an RTX GPU and prioritize clarity.

Modern rendering techniques have blurred the line between anti-aliasing and upscaling.

These technologies improve performance while also reducing aliasing, making them a better choice than traditional AA in many cases.

Yes, and the impact depends on the technique used.

More sampling, higher internal resolution, or temporal processing increases GPU workload, which can reduce frame rates. If you need a quick performance boost, lowering anti-aliasing is often one of the easiest fixes.

Your resolution plays a big role in whether you need anti-aliasing or not:

Here’s a simple way to decide which anti-aliasing setting is best for you:

You can adjust AA settings in-game or using your GPU manufacturer’s software.

In-game settings

Nvidia Control Panel

AMD Adrenalin

Anti-aliasing directly affects how clean your games look, but it also impacts performance. Choosing the right setting helps you avoid unnecessary blur, reduce visual distractions, and get smoother gameplay. Understanding how AA works makes it easier to balance image quality and frame rate based on your hardware.

Anti-aliasing is evolving quickly with AI-driven techniques like DLSS and DLAA. Traditional methods such as MSAA and SSAA are becoming less common as newer approaches deliver better results with lower performance costs. For most gamers, the best approach is simple: use the option that gives you the cleanest image without sacrificing the performance you need.

Does anti-aliasing reduce FPS?

Yes. Advanced techniques require more GPU processing, which can lower frame rates.

Is anti-aliasing needed at 4K?

Not always. Higher resolutions reduce jagged edges, but AA can still help with shimmering in motion.

Is DLSS better than anti-aliasing?

DLSS combines upscaling and anti-aliasing, often delivering better performance and comparable or improved image quality.