Potentially revolutionary next-gen AMD RDNA 5 GPUs to pack HDMI 2.2 but not with full bandwidth
We have been getting scattered reports about AMD’s next-gen RDNA 5 or UDNA architecture since 2023. Back in August 2023, we reported that AMD had canceled the flagship RDNA 4 GPU to free up resources for RDNA 5, as the GPU architecture showed “exciting early performance projections”. While AMD indeed didn’t launch any RDNA 4 flagship GPU, we have no clue whether that has helped the development of RDNA 5.
However, we are starting to get some hardware information regarding the RDNA 5/UDNA architecture. This time, Kepler_L2 has shared the possible HDMI configuration of AMD’s next-gen GPUs.
According to Kepler_L2, the next-gen RDNA5/UDNA, internally codenamed “GFX13”, will support 64 Gbps and 80 Gbps HDMI 2.2. This is not the full bandwidth of HDMI 2.2
Announced at CES 2025, HDMI 2.2 doubles the bandwidth over HDMI 2.1b’s 48 Gbps and introduces support for 4K@480 Hz, 8K@240 Hz, and 10K@120 Hz. This is a significant step up from HDMI 2.1b, which tops out at just 4K@120 Hz and 8K@120 Hz. However, users will need to invest in the new “Ultra96” HDMI cables to take full advantage of the increased bandwidth.
That said, AMD is reportedly only utilizing HDMI 2.2 with 80/64 Gbps bandwidth for its next-gen Radeon GPUs. We don’t know the true reason, but it could be a cost-saving measure.
AMD’s next-gen GPU architecture is said to be a “Zen moment” for the company’s graphics efforts. The architecture is expected to debut on desktops in late 2026 or early 2027. We could also see an RDNA 5/UDNA-based Radeon iGPU inside the PS6 in the same timeframe.
Source(s)
Kepler_L2 on X, Teaser image: AMD, Codioful on Unsplash, edited
