AMD adds Navi 23 support to Linux OpenGL driver
AMD Dimgrey Cavefish in Mesa 20.03-devel
AMD today added a new GPU codename to its Linux OpenGL driver stack (Mesa 20.03-devel). The GPU called ‘Dimgrey Cavefish’ has the same GPU architecture level as Navi 21 and Navi 22. The new Dimgrey is more than likely the codename of Navi 23.
AMD Dimgrey Cavefish (Navi 23), Source: Freedesktop
The codename can be easily associated with Navi 23 because AMD has already provided the same hexadecimal ranges within other files (0x3C to 0x46).
Navi22 has the same Range as Dimgrey Cavefish, Source: @Komachi_Ensaka
All three RDNA2 discrete GPUs are being added to Linux ‘almost’ at the same time. The Sienna Cichlid aka Navi 21 is likely to be the first, but Navi 22 and Navi 23 are to follow shortly. The good news is that we should expect a much wider range of graphics processors than before. AMD has not launched three discrete GPUs in the same year for a very long time.
Would that mean AMD is launching high-end to entry-level series under Radeon RX 6000 series in October? Probably not, because Navi 23 has been added three months after Navi 21. However, it does confirm that AMD is committed to launching more graphics cards under the next Radeon series.
| AMD Graphics Chips | ||||
|---|---|---|---|---|
| Graphics Architecture | GPU Codename | Alternative Name | Architecture | Product |
| GFX900 | VEGA 10 | GCN 5.0 | RX VEGA / Radeon Pro | |
| GFX902 | RAVEN | Raven Ridge / Picasso | GCN 5.0 | Ryzen 2000/3000(G/GE) |
| GFX904 | VEGA 12 | GCN 5.0 | Vega Pro 20 (MAC) | |
| GFX906 | VEGA 20 | GCN 5.0 | Radeon VII / Radeon Pro VII | |
| GFX908 | ARCTURUS | CDNA 1.0 | Instinct MI100 TBC | |
| GFX909 | RAVEN2 | GCN 5.0 | TBC | |
| GFX909 | RENOIR | GCN 5.0 | Ryzen 4000(H/U/G) | |
| GFX1010 | NAVI 10 | RDNA 1.0 | RX 5700/5600(M/XT) | |
| GFX1011 | NAVI 12 | RDNA 1.0 | PRO 5600M (MAC) | |
| GFX1012 | NAVI 14 | RDNA 1.0 | RX 5500 (M/XT) | |
| GFX1030 | NAVI 21 | Sienna Cichlid | RDNA 2.0 | RX 6900 TBC |
| GFX1030 | NAVI 22 | Navy Flounder | RDNA 2.0 | RX 6800/6700 TBC |
| GFX1030 | NAVI 23 | Dimgrey Cavefish | RDNA 2.0 | RX 6600/6500 TBC |
Source: Phoronix