AMD Navi4C-based RX 8900 XTX graphics card design exposure

Thanks to CTOnews.com netizens Wu Yanzu in South China for the delivery of clues! CTOnews.com August 15 news, YouTube channel Moore's Law Is Dead in the latest video, shared more information about RDNA4's flagship graphics card, and said that AMD has cancelled all release plans for Navi41 and Navi42.

The revelation shared the side view of Navi4C and said that the series includes three kinds of dies: AIDs, SEDs and MID, which is a huge improvement over RDNA3.

MLID indicates that Navi4C has at least three active intermediary layers (Active Interposers, which handles routing data between the top bare slices) on a single encapsulation layer and uses a 3D architecture.

Each active mediation layer encapsulates 3 Shader Engine Dies (SED), so 9 SED are implemented. You can also see a MID (Multimedia and I / O Die) on the left side of the structure.

MLID said AMD plans to add seven chiplets on the Infinity Cache / memory controller chip dies,RDNA3 to the RDNA4, while it will increase to 13-20 chiplets on the RDNA4.

It is reported that AMD will release Navi44 in mid-2024, which is expected to use the 6nm process, and Navi43 in 2025, which will use the 3nm process node, allowing more CU to be packaged in a smaller size.

CTOnews.com attaches a link to the MLID video here, which interested users can read in depth.