The next generation AMD graphics architecture based on the GFX1250 IP under the CDNA family has been spotted online. It should come as no surprise that the successor to the RDNA 4 GPU will feature a newer architecture. Most reports indicate that AMD may adoptUDNA (Unified DNA), combining RDNA and CDNA architectures to compete with NVIDIA’s CUDA ecosystem. While this has been confirmed by various reports, the latest leaks suggest something different.
As discovered by @Kepler_L2, the new device ID added to the kernel-level codebase is "GFX1250" and its architecture starts with "CDNA". If you are familiar with the device IDs of AMD GPUs, then you must know the corresponding IDs for the RDNA 3, RDNA 3.5, and RDNA 4 architectures. For example, GFX1100 is part of RDNA 3, while RDNA 3.5 is often identified as GFX1150 and above, and RDNA 4 starts with GFX1200.
Image source: @Kepler_L2
The newer "GFX1250" seems to be some kind of extension of RDNA 4, just like the GFX1150 we mentioned earlier was an extension from RDNA 3 to RDNA 3.5. Additionally, last time we looked, the "UDDNA" architecture was labeled "GFX13" (or GFX1300), so it looks like that IP will be used to drive the MI400 series, after which the company will transition to the GFX13/14 IP, which will be the beginning of the UDNA generation.
But the device ID once again mentions "CDNA," which is unlikely to be the follow-up to RDNA 4. So, does it refer to RDNA 4.5 or UDNA? It’s not clear yet, we can only speculate that it is the successor to RDNA 4, but there is no guarantee that it is the next generation UDNA architecture.
As far as integrated graphics is concerned, AMD currently has no plans to offer the RDNA 4 architecture on CPU/APU, and the RDNA 3.5 architecture will also be carried over to Medusa Point. Therefore, it is unlikely that the GFX1250 will appear on the CPU/APU.