Notebookcheck Logo

AMD Linux patches reveal no Infinity Cache for the Phoenix Point APU and only four displays at a time for the RDNA3 GPUs

AMD's Linux patches mention four RDNA3 device IDs. (Source: AMD)
AMD's Linux patches mention four RDNA3 device IDs. (Source: AMD)
Information about AMD’s next-generation RDNA3 architecture keeps trickling down. This time around we have a report about AMD’s DCN display controllers for the upcoming RX 7000 series GPUs and the Phoenix Point APU thanks to Coelacanth’s Dream. The report also contains some interesting data regarding AMD’s Infinity Cache on RDNA3.

It seems like the prelaunch setup for AMD’s RDNA3 graphics processors is underway as Coelacanth’s Dream has found evidence of four RDNA3 device IDs in AMD’s Linux patches. The four IDs refer to three RDNA3 dGPUs, the Navi 31 (GFX1100), 32 (GFX1101), and 33 (GFX1102), and the AMD Phoenix Point APU. Upon digging through the patches, Coelacanth’s Dream also uncovered some interesting information about AMD’s Display Core Next (DCN) display controllers.

Reportedly, the GFX1103 GPU or Phoenix Point APU will have DCN 3.1.4 and the RDNA3 GPUs will come with DCN 3.2.x engine. VideoCardz notes that, aside from the version numbers, there is no obvious difference between DCN 3.1.4 and DCN 3.2.x engines. Furthermore, both DCN versions will allegedly only support four displays at a time.

Interestingly, Coelacanth’s Dream hasn’t found any data relating to Memory Access at Last Level (MALL) for the Phoenix Point APU. MALL is another way to refer to Infinity Cache, the large L3 cache that AMD uses in its RDNA2 GPUs to remove memory bottlenecks, increase bandwidth, and improve efficiency. If true, this would mean that AMD will reserve Infinity Cache for its discreet RDNA3 offerings and leave out the Phoenix Point RDNA3 APU.

AMD is targeting a Q4 2022 launch for its next-generation Radeon RX 7000 series chips. So, we’ll know soon enough how much of the information uncovered by Coelacanth’s Dream is factual.

Buy XFX Speedster SWFT 210 Radeon RX 6600 CORE on Amazon

Read all 2 comments / answer
static version load dynamic
Loading Comments
Comment on this article
Please share our article, every link counts!
.170
> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2022 07 > AMD Linux patches reveal no Infinity Cache for the Phoenix Point APU and only four displays at a time for the RDNA3 GPUs
Fawad Murtaza, 2022-07-12 (Update: 2022-07-12)