Displayport and HDMI both are mainstream digital video interfaces. DisplayPort (DP) and HDMI have the following core differences in performance, design, and applicable scenarios:
1, Performance and bandwidth
Bandwidth and resolution support
DP: DP 2.0 version has a bandwidth of 80Gbps, supports 16K resolution (60Hz) or 8K 120Hz output, and supports lossless compression technology (DSC) 23.
HDMI: HDMI 2.1 version has a bandwidth of 48Gbps and supports 8K 60Hz or 4K 120Hz, but high-resolution support relies on compression technologies such as DSC.
Refresh rate and color depth
DP can support higher refresh rates (such as 4K 144Hz) at 4K resolution, while HDMI 2.1 typically supports up to 120Hz at 4K.
DP supports higher color depth (such as 12 bits), while HDMI mostly uses 10 bit 23.
2, Design Features
Physical interface
The DP interface adopts a locking design (some models), which provides a more stable connection, but the insertion and removal direction needs to be aligned at 15 degrees.
HDMI is an asymmetric trapezoidal interface, which is more convenient to plug and unplug, but there is no locking mechanism.
Additional features
HDMI integrates HDCP encryption, CEC device linkage control, and Audio Return (ARC), making it more suitable for home audio and video scenes.
DP focuses on video transmission, supports multi screen daisy chain (MST), and can connect multiple monitors with a single interface.
3, Application scenarios
HDMI Applicable Scenarios
Home entertainment devices: TVs, game consoles, Blu ray players, etc., due to their high popularity and support for integrated audio and video transmission.
Consumer grade audio and video: Strong compatibility, widely used in projectors and sound systems.
DP Applicable Scenarios
Professional fields: high refresh rate gaming displays, graphics workstations, multi screen office, etc., to meet high bandwidth requirements.
PC devices: Free licensing agreements attract widespread adoption by PC manufacturers, compatible with graphics cards, laptops, and other devices.
4, Compatibility and Cost
Compatibility: HDMI covers almost all audio and video devices, and DP needs to be compatible with HDMI/VGA and other interfaces through an adapter.
Cost: HDMI requires patent fees, DP is a free standard, and cable costs are 58% lower.
Summary and Suggestions
Gaming/Multi screen Office: Priority should be given to DP (high bandwidth, multi screen expansion) 28.
Home audio/TV equipment: HDMI is more compatible (with integrated functions and excellent compatibility) 37.
Future devices: DP 2.0/2.1 has greater potential in ultra-high resolution scenarios, while HDMI 2.1 is more suitable for existing 8K devices.
