Which cable fits a 5120×1440 240Hz super ultrawide? Bandwidth breakdown
A 49-inch 5120×1440 super ultrawide at 240 Hz with 10-bit 4:4:4 HDR needs 59.5 Gbps, well past DisplayPort 1.4's 25.9 Gbps ceiling and UHBR 13.5's 52.22 Gbps. Only UHBR 20 (77.37 Gbps) or HDMI 2.2 can carry this mode uncompressed; everything else relies on Display Stream Compression.
Interface Bandwidth Analysis
See how much uncompressed and compressed bandwidth this resolution and refresh rate mode demands, compared to the native limits of common video cables.
DSC uses visually lossless 3-to-1 compression, shrinking the required bandwidth so it fits through older cables.
Calculator
Display Bandwidth Calculator
Required Bandwidth
Uncompressed
59.45 Gbps
With DSC (Display Stream Compression)
15.85 Gbps
Interface Compatibility
How this is calculated
DSC 3:1 compresses the signal to about 15.9 Gbps, which even DP 1.4 handles easily. That's how Samsung's Odyssey G9 OLED and similar super ultrawides hit 240 Hz over DP 1.4: they use DSC as the default, not the fallback. Dropping to 175 Hz (the non-compressed spec on most DP 1.4 super ultrawides) brings bandwidth down to about 43.4 Gbps, still too much for DP 1.4 raw but fine over HDMI 2.1 at 8-bit.
Verdict
59.5 Gbps is past most real-world interfaces' uncompressed limits. DSC is universal here, and DP 2.1 UHBR 20 is the only route to get 240 Hz at this resolution without compression, with cables that top out at about 1 meter.
More Ultrawide scenarios
Frequently asked questions
Can standard DisplayPort 1.4 run a 49-inch super ultrawide at 240Hz?
Related tools
PPI & Retina Calculator
Calculate PPI and Retina distance for your display.
Use tool ➜Screen Size Comparison
Compare screen sizes side-by-side to visualize physical dimension differences.
Use tool ➜FPS Visualizer
Visualize the impact of different FPS settings on your game experience.
Use tool ➜Data Transfer Calculator
Estimate transfer times for files over USB, WiFi, Ethernet, and more.
Use tool ➜