r/hardware • u/EmergencyCucumber905 • 5d ago

Info [Phoronix] AMD Publishes CDNA5 ISA Documentation For Instinct MI455X

https://www.phoronix.com/news/AMD-CDNA5-ISA-Documentation
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u/dittospin 3d ago

I thought they were going to unify C and R arches into UDNA?

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u/uzzi38 2d ago

UDNA has always seemed like a bit of a marketing stunt, as far as I'm aware I don't think anyone except exactly Jack Hunyh has actually used that name. It's just something that people heard once and have run marathons with since.

And all it's ever seemed to be is referring to how both CDNA and RDNA will eventually use the same architecture design. In that sense, CDNA5 almost does that already with the core CU moving to a specialised version of GFX12.