AMD RDNA4 to use 5nm and 3nm chips?

Twitter leaker Greymon55 claims AMD's RDNA4 will be a full product lineup with a common architecture. This will likely end up as the Radeon RX 8000 series, so still quite a long wait as the RDNA3-based Radeon RX 7000 series will launch first in 2022. It's believed the Radeon RX 8000 lineup won't hit the market until at least late 2023, so take everything below with a grain of salt as it's still far into the future and possibly subject to change.

Allegedly, RDNA4 use multi-chip module (MCM) design, just like RDNA3, for at least some SKUs. Greymon55's information indicates RDNA4 will use 5nm I/O dies and 3nm graphics tiles. The upcoming RDNA3 MCM GPUs are expected to use 6nm I/O dies and 5nm graphics tiles.

AMD Radeon RX 8000 series are not expected to launch till at least late 2023. The specifications of Navi4X are currently unknown as they are still actively being developed by AMD. AMD RDNA4 GPUs might compete with NVIDIA Ada Lovelace’s successor, which has far not been named and at the same time, with Intel DG3 family of GPUs codenamed Arc Battlemage.

No, RDNA4 is a full product line with a common architecture, and RDNA4 MCM will use 3nm+5nm.

— Greymon55 (@greymon55) August 19, 2021