Two new software IDs are emerging and reshuffling the cards of AMD iGPUs. The APU “Medusa Point” is leaning towards a pragmatic RDNA 4m, designed for FSR 4.
RDNA 4m: GFX1171 and GFX1172 Integrated into the GFX11 tree
A merge request in LLVM adds two AMD GPU targets: GFX1171 and GFX1172. These IDs extend the GFX11 generation (RDNA 3) and do not come from the “true” RDNA 4 branch, confirming an incremental evolution now designated RDNA 4m.
AMD had previously positioned GFX1170 as the RDNA 4m target. The new GFX1171/1172 consolidate this strategy for the Ryzen 500 “Medusa Point”, while “Medusa Halo” will shift to the next microarchitecture RDNA 5 / UDNA. The software focus includes WMMA and SWMMAC instruction extensions, signaling support for matrix operations within a GFX11 framework.
FSR 4, INT8/FP8 and Extended Lifecycle
The porting of INT8 and FP8 formats targets FSR 4 compatibility, a logical priority for 2026 APUs. AMD intends to maintain the RDNA 3.5 / RDNA 4m iGPU until 2029, aligning the integrated graphical capabilities with those of current Ryzen AI 300/400 while adding necessary elements for ML-based upscaling functions associated with the RDNA 4 IP.
“Medusa Point” will introduce a desktop RDNA 4m presented as an RDNA 3 reinforced by RDNA 4 modules. The objective is clear: to ensure FSR 4 on less powerful iGPUs before the arrival of “Medusa Halo” and RDNA 5.
The choice of a tagged and durable RDNA 4m suggests a realignment of AMD towards software consistency and IP amortization related to iGPUs, with a feature differential reserved for higher segments in RDNA 5. For the end-user, the longevity of FSR 4 on entry and mid-range mobile and desktop platforms ensures a common upscaling foundation across several generations.
Source: TechPowerUp
