4K at 240 Hz Similarly, DisplayPort 1.4a runs 4K content at up to 120 Hz natively, but with DSC, a supporting 4K display could surpass that. There are numerous 4K monitors that already use DSC to run 4K at 144 Hz, but 240 Hz is unprecedented. Monitors that use DSC claim there's no reduction in image quality.2 Jan 2022