| Maximum raw link bandwidth | 18 Gbps TMDS | 48 Gbps FRL | The network and AV-over-IP endpoints must provide sufficient throughput for the selected video format, plus protocol and network overhead. |
| Approximate usable data rate | Approximately 14.4 Gbps after 8b/10b encoding | Approximately 42.7 Gbps at the 48 Gbps maximum after 16b/18b encoding | Usable payload is lower than the headline link rate, so system design should include bandwidth headroom. |
| Typical 4K capability | Up to 4K at 60 Hz with compatible color settings | Supports higher 4K refresh rates and advanced video formats, depending on the source and display | HDMI 2.1 is better suited to high-refresh 4K applications, while HDMI 2.0 can be adequate for standard 4K60 distribution. |
| 4K60, 4:4:4, 8-bit video demand | Approximately 17.82 Gbps of uncompressed video data | Comfortably supported within the available link capacity | A full-bandwidth 4K60 signal leaves little margin on an 18 Gbps interface once transport overhead is included. |
| 4K120 suitability | Generally not suitable for uncompressed 4K120 at full chroma and bit depth | Designed to support high-bandwidth formats such as 4K120 when the complete system is compatible | Useful for simulation, premium display, live production, and interactive applications requiring high frame rates. |
| Color sampling flexibility | 4:4:4, 4:2:2, and 4:2:0 options depend on resolution, refresh rate, and bit depth | Greater bandwidth enables more combinations of chroma sampling, refresh rate, and bit depth | Higher chroma fidelity is important for text, computer interfaces, signage, and detailed graphics. |
| Color depth | Commonly supports 8-bit and higher color depths within bandwidth limits | Supports higher bit-depth configurations when supported by the source, display, and transport path | Higher bit depth improves gradient smoothness but increases bandwidth requirements. |
| HDR transport | Can transport HDR formats when the connected devices and content support them | Provides more bandwidth headroom for HDR combined with high resolution, frame rate, and color depth | AV-over-IP equipment must preserve HDR metadata and maintain adequate throughput end to end. |
| Uncompressed AV-over-IP bandwidth planning | Often requires a dedicated high-speed path for each full-bandwidth 4K stream | May require 25 GbE, 40 GbE, or higher infrastructure depending on stream format and architecture | Switch capacity, uplinks, multicast handling, and aggregate traffic are as important as endpoint bandwidth. |
| Compressed AV-over-IP bandwidth planning | Lower network rates are possible, depending on codec, image complexity, latency, and quality targets | Higher-quality or lower-compression workflows may still require substantial network capacity | Compression reduces bandwidth but may introduce latency, processing requirements, or image-quality trade-offs. |
| Latency considerations | Low latency is possible with direct transport or lightly processed signals | Low-latency transport is possible, but higher data rates can increase infrastructure and processing demands | Interactive control, live events, and KVM applications require predictable end-to-end delay. |
| Scalability | Point-to-point cabling can become complex as the number of sources and displays grows | Higher bandwidth supports demanding sources, but switching and uplink capacity must scale accordingly | Network-based distribution can simplify matrix expansion, routing, and multi-display management. |
| Recommended design approach | Use for compatible 4K60 systems where bandwidth, cabling distance, and signal features are clearly defined | Use when the design requires 4K120, high bit depth, high chroma fidelity, or additional bandwidth headroom | Select the AV-over-IP transport, switching fabric, and endpoint capabilities based on the complete video format—not only the display resolution. |