Though we can say that Arcturus will be the successor of Navi (that is, after Navi ), would be its replacement, on the contrary. It will probably be, to some extent, independently existing products. On his Twitter account, Komachi has alerted Linux patches that reveal more about the news:
- Looks like a professional product, computing solutions
- available information indicates 128 CU
- but this is probably not a simple card with two GPUs Vega 20 (2 × 4096 stream processors)
Possibility of a dual Vega 20 two figures. The first is a different multimedia support. Arcturus is equipped with a newer version of VCN / VCE. Specifically, it mentions VCN 2.5 support, which is a newer revision than the need for Navi with VCN 2.0. Vega 20 still uses VCE, specifically 4.1. Furthermore, the PCI-ID differs.
According to the patches, Arcturus belongs to “GFX908,” but it’s important to keep in mind that the GFX version | does not designate hardware, but a software model. This may change with hardware but may not. An example is the generation Polaris (GCN 4), where AMD felt the need to maintain maximum software compatibility due to consoles, and thus, through the architecture update, retained the software model of the eighth series used by the previous generation (GCN 3). It is therefore possible that Arcturus is the product of architecture Vega (GCN 5), but not certain. It might be GCN 6, where AMD decided to maintain software compatibility similar to Polaris . Anyway, it’s more advanced than the latest version Vega Vega 20 . However, with regard to the number of stream processors, one can safely say that it will not be a derivative Navi .
Lisa Su said in the first half that AMD did not stop | after the release of Navi with GCN / Vega and will continue to release new products based on it. Arcturus is probably one of them.
On the Phoronix website, “Arcturus has not 3D engine” was mentioned as a non-originated quote, which would mean that it is a pure GPU with no graphics elements, but it does cry a bit for several reasons. First of all, the removal of texturing units and ROPs would require substantial changes in the operation of the chip, as these units also handle some non-graphical operations. Basically, it would be the most significant change in the architecture that has occurred since the release of GCN. However, it might be difficult to maintain an existing software model. Furthermore, the absence of a 3D kernel may involve some misunderstanding of the situation. For example, that a 3D kernel is not supported in an already published software fragment does not necessarily mean that it is not physically present or not supported at all.
The situation is unclear | with 128 CU (Compute Units). Vega 20 has 64 CUs after (as is usual with GCN) 64 stream-processors for everyone. That is. 4096 stream-processors total. Arcturus appears to be a product of 128 CU, but at the same time it seems that each contains 32 stream-processors (half). In this respect, however, it is pointless to go on thin ice, apparently we are missing some substantial piece of the puzzle that makes these fragments meaningful in total.
If we summarize the situation, Arcturus looks at a 7nm computing product with HBM memories | of potential 16-32 GB, a GCN-based architecture that can and will probably bring interesting architectural changes over Vega 20 .