AMD ROCm support for Navi 31/33
AMD RDNA3 GPUs have recently been added to official ROCm developer tools.
The launch of Navi 3X GPUs may still be far away, but AMD is already preparing its developer tools for the upcoming launch. Two of the three rumored Navi 30 series GPUs can now be found in the Github update. The ROCclr (Radeon Open Compute Common Language Runtime) now lists Navi 31, the rumored flagship of the next-gen series, and Navi 33, considered a mid-range GPU.
AMD Navi 31/33 in ROCm software, Source: Github
Last month was full of RDNA3 leaks and rumors, we have learned of the possible specs of both GPUs and some basic details on their design. The Navi 31 is rumored to be an MCM (multi-chip-module) design with two active graphics chiplets. The GPU is said to offer as many as 15360 FP32 cores, which would be tied to GDDR6 memory. On the other hand, the Navi 33 would be monolithic, making good use of TSMC’s 6nm node with 5120 Stream Processors.
So far the rumors of Navi 3X GPUs taping out have not found any confirmation. Those processors are now expected to launch no sooner than Q3 2022, which means there is still a lot of time for tape out and mass production. Earlier this month, a Twitter user known as Olrak29_ came up with block diagrams of all three rumored Navi 3X GPUs:
AMD Navi 3X GPU Block Diagram, Source: @Olrak29_
| 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 |
| Stream Processors | 15360 | 10240 | 5120 |
| GPU Clock | ~2.5 GHz | TBC | TBC |
| Memory & Bus | 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 is based on rumors | |||
Source: Github via @KOMACHI_ENSAKA
