AMD adds GFX1171 and GFX1172 to its “RDNA 4m” graphics family

[harlan4096]

AMD RDNA 4m aka RDNA3.5+ 

AMD appears to be expanding its new RDNA 4m graphics branch in LLVM. A pending pull request adds GFX1171 and GFX1172 alongside the earlier GFX1170 target, and all three are listed under the same RDNA 4m section. Phoronix says the two new entries currently follow the same code paths and ISA capabilities as GFX1170, with no functional differences documented so far. 

The GFX1170 first appeared in February as an APU or SoC target inside the GFX11 family, which is normally associated with RDNA 3. AMD’s full RDNA 4 GPUs use the GFX12 family instead. Earlier patches already revealed that RDNA4m basically include FP8 and BF8 conversion support plus WMMA and SWMMAC-related updates, pushing it closer to RDNA 4 behavior in some areas, such as support for advanced ML-algorithms including FSR4. 

LLVM patch, Source: Freedesktop

FP8 Support 

• ❌AMD Strix Point ➡️RDNA3.5
  
• ❌AMD Strix Halo➡️RDNA3.5
  
• ✅AMD Medusa Point ➡️ RDNA3.5+/RDNA4m 
  
• ✅AMD Medusa Halo ➡️ RDNA5 
  

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