Does DisplayPort 1.4 support 1440p 144Hz? Bandwidth and HDR guide

1440p (2560×1440) at 144 Hz with 10-bit 4:4:4 HDR needs 17.8 Gbps. That's 69% of DisplayPort 1.4's effective 25.9 Gbps data rate, leaving plenty of headroom for signal overhead, adaptive sync metadata, and audio return.

Required bandwidth

17.8 Gbps

Uncompressed

With DSC

4.8 Gbps

Visually lossless 3:1

Mode

2560×1440 @ 144 Hz

10-bit 4:4:4

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.

Uncompressed Signal17.8 Gbps

Cable Limits Reference

HDMI 2.0

14.4 Gbps

⚠ DSC required

DP 1.4

25.9 Gbps

✓ Native support

HDMI 2.1

42.6 Gbps

✓ Native support

DP 2.1 (UHBR 20)

77.4 Gbps

✓ Native support

Display Mode: 2560 × 1440 @ 144 Hz

Color depth: 10-bit 4:4:4

Resolution

Refresh Rate: 144 Hz

Color Depth

Chroma

Required Bandwidth

Uncompressed

17.84 Gbps

With DSC (Display Stream Compression)

4.76 Gbps

Interface Compatibility

HDMI 1.4

DSC Required

HDMI 2.0

DSC Required

HDMI 2.1 (48G)

✓ Native

HDMI 2.2 (96G)

✓ Native

DisplayPort 1.2

DSC Required

DisplayPort 1.4

✓ Native

DisplayPort 2.1 (UHBR 10)

✓ Native

DisplayPort 2.1 (UHBR 13.5)

✓ Native

DisplayPort 2.1 (UHBR 20)

✓ Native

How this is calculated

This is the canonical 27-inch 1440p gaming monitor mode. Any DisplayPort 1.4 cable with a certified DP-HBR3 chipset handles it without DSC, which means latency and color accuracy are both at their best-case values. Older DisplayPort 1.2 tops out at 17.28 Gbps and can't quite make this at 4:4:4. You'd have to drop to 8-bit (13.4 Gbps) or use 4:2:2 chroma.

Verdict

17.8 Gbps is the sweet spot mode for DisplayPort 1.4 monitors. 1440p 144 Hz HDR is where the interface delivers maximum quality with comfortable headroom. It's what most current-gen gaming monitors negotiate when plugged into a DP 1.4 source.