Next-gen AMD GPUs reported to support HDMI 2.2 with up to 80Gbit/s bandwidth

Some beans have spilled around AMD's rumored upgrades for its next-generation graphics architecture. The American silicon giant is expected to support up to 80 Gbps mode on HDMI 2.2 for its upcoming graphics architecture, internally codenamed GFX13, and expected to launch as RDNA 5 or UDNA.

The latest information comes from the leaker @Kepler_L2, who took to their social media account on X (via VideoCardz). It strengthens the hopes of the latest HDMI standard and support for faster bandwidth making their way to the next generation of AMD GPUs.

The HDMI 2.2 standard was announced earlier this year and released to manufacturers in the first half of 2025. It pushes the maximum allowed bit rate to 96 Gbps and supports Latency Indication Protocol (LIP) to improve audio and video synchronization.

However, according to Kepler's post, RDNA 5 GPUs are expected to support only 64 Gbps and 80 Gbps modes. This suggests that the 96 Gbps mode may not be supported on the new architecture, while it remains unclear whether this is due to some hardware limitation or will be added later.

Although the new piece of information pertains to GFX13, it doesn't clarify whether it's related to the PRO or Radeon RX series. The company has previously used UHBR 13.5 (54 Gbps) for its consumer-focused GPUs to reduce costs while supporting UHBR 20 (80 Gbps) on PRO cards, according to the leaker. It remains to be seen whether AMD treats the two product lines the same or differently.

Another standard announced earlier this year was DisplayPort 2.1b, which keeps the same maximum bandwidth of 80 Gbps but supports three times the cable length for UHBR20 GPU-to-display connections compared to existing VESA-certified DP80 passive cables.

The new standard is supported on NVIDIA's RTX 50 and RTX PRO Blackwell series GPUs. For now, there is no update on whether AMD will bring DisplayPort 2.1b support to the GFX13 architecture.

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