AMD RDNA3 confirmed to be a hybrid of 5nm and 6nm nodes
AMD’s Infinity Data Fabric Silicon Design Engineer has confirmed through its Linkedin profile that the next generation Navi 3X architecture is to utilize 5nm and 6nm nodes.
Earlier this week AMD CEO made first comments this year on RDNA3 consumer graphics architecture. The company is now set to launch the first Navi 3X GPUs by the end of this year alongside its new Zen4 “Raphael” CPU architecture. AMD has not yet confirmed the fabrication nodes for these new GPUs, although most rumors seem to suggest it is a hybrid of 5nm and 6nm nodes.
It seems that those rumors have finally been confirmed by an AMD employee who now lists these new GPUs on his Linkedin profile. Not only does he list each of the Navi 3X GPUs, but also the nodes each of them use. According to his profile, Navi 31 and Navi 32 are to utilize 6nm and 5nm nodes, while Navi 33 is 6nm. This indirectly confirms the rumors that Navi 33 will be the only monolithic GPU in the series.
AMD Navi 31/32/33/MI300 Fabrication Nodes, Source: Linkedin
Interestingly, the profile also mentions MI300, which is a successor to Instinct MI200 data-center accelerator, AMD’s first Multi-Chip-Module (MCM) design GPU. Not much is known about this GPU yet, except for the fact that it might compete against NVIDIA Hopper and Intel Ponte Vecchio.
| Rumored Specs of AMD RDNA3 GPUs | |||
|---|---|---|---|
| VideoCardz.com | |||
| Fabrication Node | TSMC 5nm + 6nm | TSMC 5nm + 6nm | TSMC 6nm |
| Architecture | AMD RDNA3 | AMD RDNA3 | AMD RDNA3 |
| GPU Package | Multi-Chip-Module (MCM) | Multi-Chip-Module (MCM) | Monolithic |
| Estimated GPU Size | ~800 mm² (or more) | TBC | ~440 mm² |
| Graphics Dies | 2 | 2 | 1 |
| Shader Engines | 6 | 4 | 2 |
| RDNA Workgroups (WGP) | 60 | 40 | 20 or 16 |
| Stream Processors | 15360 | 10240 | 5120 or 4096 |
| GPU Clock | ~2.5 GHz | TBC | TBC |
| Memory & Bus | up to 32GB GDDR6 256-bit | GDDR6 192-bit | GDDR6 128-bit |
| Infinity Cache | 256-512MB | 256-384MB | 128-256MB |
| Estimated Power Consumption | ~350-400W+ | TBC | TBC |
| Release / Annoucement Date | Late 2022 | Late 2022 | Late 2022 |
| Rumored SKU | Radeon RX 7900XT | Radeon RX 7700XT | Radeon RX 7600XT |
| Rumored Performance | 2.5x NAVI 21 | TBC | ~ Navi 21 |
| All information based on rumors | |||
Update: the information about unreleased GPU nodes has already been removed from the profile.
Source: Linkedin (profile no longer available) via @blueisviolet
