Both home theater and home entertainment projectors are best with 1080p resolutions, though many consumers are satisfied with less expensive 720p models. If you're a more demanding user, you should consider a 4K projector with a resolution of 3,840 by 2,160 pixels, twice as many vertical and horizontal pixels as 1080p.
What is considered good resolution for a projector?
The best resolution for you depends largely on your screen size. Ideally, the higher the resolution, the crisper the image will be. For screens that measure 130-inches or more, a 4K projector is the better investment. Nevertheless, at a minimum, you should not invest in a projector with less than 1080p resolution.
From best quality to least, the four main categories of resolution are UXGA, SXGA, XGA, and SVGA. A UXGA projector will have resolution of 1,600 x 1,200, the highest quality; whereas SVGA will have 800 x 600. If you just need a projector to show PowerPoint presentations, SVGA is right for you.
A projector's resolution (or more precisely, its "native resolution") is simply the number of pixels that it has available to create an image. The higher the resolution of a projector, the more pixels it has. Projector resolution is designated with either one or two numbers. A typical two-number resolution might be listed as "1280x720."