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Codename Sienna-Cichlid – is that finally AMD's Big Navi? new information has been released

Komachi has struck again. For example, a mysterious AMD RDNA 2 GPU has been discovered in the latest Linux patches, and there is much speculation that this could finally be the long-awaited Big Navi GPU for the next generation Radeon RX graphics cards that all AMD enthusiasts are eagerly awaiting. This interesting entry by the people at Phoronix discovered and bears the code name Sienna Cichlid.

The code name "Sienna-Cichlid" is somewhat nebulous. AMD had used star naming conventions for parts of the last generations instead of islands, which started with Polaris. Afterwards we got to see Vega, then Navi and now we get soon the 2. Update of the RDNA architecture in the form of RDNA 2. The RDNA 2 series will consist of several Navi-GPUs. While the official star naming conventions for these GPUs will probably not change in the foreseeable future, it somehow looks like they will be named, at least internally, according to a different naming scheme, as this leak shows:

This patch set linked above adds support for the new AMD GPU, including power management, display, kfd, interrupts, gfx, multimedia, etc. The new register headers are really big and if you like, you can have a look at the original (as long as it's still online), or here as PDF, where I saved the website:

PATCH 000

 

The same patch also lists GFX1030, which is the codename for the RDNA-2 line, while RDNA 1 uses the codename GFX1010. As for the GPU itself, there are a number of features that the navi-based GPU adds over existing nav chips, such as new VCN 3.0 functions for video encoding, DCN3 display and various other changes over existing nav GPUs.

 

 

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About the author

Igor Wallossek

Editor-in-chief and name-giver of igor'sLAB as the content successor of Tom's Hardware Germany, whose license was returned in June 2019 in order to better meet the qualitative demands of web content and challenges of new media such as YouTube with its own channel.

Computer nerd since 1983, audio freak since 1979 and pretty much open to anything with a plug or battery for over 50 years.

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