Mysterious AMD RDNA 2 GPU Codenamed Sienna Cichlid Spotted in Linux Patches, Speculated To Be The Big Navi GPU For Enthusiast Radeon RX Graphics Cards

A mysterious AMD RDNA 2 GPU has been spotted within the latest Linux patches & it’s speculated that this could be the Big Navi GPU powering next-generation Radeon RX graphics cards that all enthusiasts are waiting for. This specific AMD GPU was spotted by the folks at Phoronix and is codenamed Sienna Cichlid.

MD’s Mysterious Sienna Cichlid GPU Spotted, Speculated To Be RDNA 2 Based Big Navi Chip For Enthusiast Radeon RX Graphics Cards

The Sienna Cichlid codename itself is quite fishy. AMD moved to star naming conventions for its next-generation parts starting Polaris. We got to see Vega which was the last of the GCN GPUs and now we are soon going to get the 2nd update to the RDNA architecture in the form of RDNA 2. The RDNA 2 lineup will consist of several Navi GPUs. While the Star naming conventions for these GPUs aren’t changing anytime soon, it looks like, at least internally, they go by a different set of naming schemes as is evident by this leak.

Sienna Cichlid is a GPU from AMD. This patch set adds support for it including power management, display, kfd, interrupts, gfx, multi-media, etc. The new register headers are really big so I haven’t sent them to the list. Alex Deucher (AMD) via freedesktop.org

The same patch also lists down GFX1030 which is the codename for the RDNA 2 lineup while RDNA 1 uses the GFX1010 codename. As for the GPU itself, there are a certain set of features the Navi based GPU adds over existing Navi chips such as:

New VCN 3.0 capabilities for Video EncodingDCN3 Display FrontSeveral Other Alterations compared to existing Navi GPUs

NV_SIENNA_CICHLID_P_A0 = 40.
NV_NAVI21_P_A0 = 40.https://t.co/fY5rl9vYnN pic.twitter.com/opf96RcyKW

— 比屋定さんの戯れ言@Komachi (@KOMACHI_ENSAKA) June 1, 2020

There are a total of 207 patches added to the AMD Linux driver which can be viewed here. While there’s not much information to dissect from within the patches, Komachi (via Videocardz) provides his understanding of why this GPU could indeed be the Big Navi GPU. The AMD Navi 21 has been presumed to be the Big Navi GPU which will power AMD’s enthusiast-grade Radeon RX lineup later this year. It is stated that Linux 5.9 merge window opens in August while a stable launch around Q4 2020 in October.

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By: Hassan Mujtaba
Title: Mysterious AMD RDNA 2 GPU Codenamed Sienna Cichlid Spotted in Linux Patches, Speculated To Be The Big Navi GPU For Enthusiast Radeon RX Graphics Cards
Sourced From: wccftech.com/amd-rdna-2-sienna-cichlid-gpu-big-navi-21-radeon-rx-graphics-cards-spotted/
Published Date: Tue, 02 Jun 2020 01:46:22 +0000

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