DSC is a compression algorithm that reduces the size of the data stream by up to a 3:1 ratio. Although not mathematically lossless, DSC meets the ISO 29170 standard for "visually lossless" compression in most images, which cannot be distinguished from uncompressed video. Using DSC with HBR3 transmission rates, DisplayPort1.4 can support 8K UHD () at 60Hz or 4K UHD () at 120Hz with 30bit/px RGB color and HDR. 4K at 60Hz 30bit/px RGB/HDR can be achieved without the need for DSC. On displays which do not support DSC, the maximum limits are unchanged from DisplayPort1.3 (4K 120Hz, 5K 60Hz, 8K 30Hz).