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How to Run Games at 4K on a 1080p Monitor With Supersampling

Ever wished you could run a game at a higher resolution without splurging on a 4K monitor? If jagged edges are getting you down, a feature called supersampling will let you run your games at 4K or higher—even on a 1080p monitor—for a noticeably sharper image.

Those who have been in the PC gaming space for a while are probably already familiar with the concept of aliasing—where edges that should be smooth look like stair steps, creating a pixelated look reminiscent of early 3D games. This is particularly common at lower resolutions like 1080p, which is why games have included anti-aliasing features for years to help smooth out those jaggies.

Modern versions of anti-aliasing, like Subpixel Morphological Antialiasing (SMAA), work decently well, mitigating those obvious stair-step patterns without sucking up a ton of resources. But they aren’t perfect. Many will only smooth out certain types of aliasing around polygon edges, while others may make the image look a bit blurry. 

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