So, if you can already treat your 4K screen as a native 1080p panel for gaming, what’s the point of a dual-mode screen? There are several reasons, but the key one is refresh rate. If you have a 144Hz 4K monitor, using integer scaling to run it at 1080p will mean you’re still stuck at 144Hz, when the latest 1080p gaming monitors are considerably faster. However, with a dual-mode monitor, you’ll also get a much higher refresh rate when you drop the resolution, meaning the best of both worlds. A faster refresh rate means your monitor can really keep up with displaying fast action smoothly. Your G
So how can a 4K screen also run a 1080p resolution natively? The answer is a little trick called integer scaling, and you don’t actually need a dual-mode monitor to run it, although it’s much better if you do have one – more on that later. Here’s the skinny. Your monitor has a fixed, precise grid of pixels, 3840×2160 in the case of a 4K screen, and this is the native resolution. Dropping the resolution below this point usually results in blurriness, as your screen is no longer operating at its native resolution. It basically has to simulate the downscaling, as unlike an old analogue CRT screen