AMD's RDNA 3 Navi 31 GPU reportedly has a huge 384-bit memory bus and 24GB of RAM
Can we believe any of these AMD rumours?
Published: 18th May 2022 | Source: Various |
AMD's RX 7900X reportedly features 24GB of GDDR6 memory
Rumours about AMD's next-generation GPU architecture are coming in quick and fast, and many of them contradict each other. As always, rumours regarding future products should be taken with a grain of salt, especially now that AMD's GPU chiplet rumours have been called into question.
Today, a new information from @Greymon55 suggested that AMD's Navi 31 silicon would feature a 384-bit memory bus, its Navi 32 Silicon would feature a 256-bit memory bus, and their Navi 33 silicon would feature a 128-bit memory bus. This would give AMD's RDNA 3 flagship, the alleged RX 7900 XT, support for up to 24GB of GDDR6 memory, giving it a 50% VRAM bandwidth upgrade over the RX 6900 XT (if running at the same memory speeds).
When combined with AMD's second generation Infinity Cache technology, AMD's RDNA 3 flagship should offer consumers plenty of memory bandwidth for gaming workloads. In theory, a 384-bit graphics card from AMD could offer users 48GB of total VRAM, but doing this would require more memory modules and more complex/expensive manufacturing techniques. GDDR6 modules would need to be added to both sides of AMD's Navi 31 PCB to offer 48GB of total VRAM. This much VRAM is only needed within the pro PC market.
RDNA 3 + Navi 31 - A Seven Chiplet Monster?
@AMDGPU_ on Twitter has taken today's information and used it to create a rendering of AMD's RDNA 3 NAVI 31 GPU package. It assumes that rumours that AMD's RDNA 3 graphics card is a seven chiplet GPU is correct, and that the graphics card contains a single compute die and six memory chiplets. Each of these chiplets make up 64-bits of AMD's Navi 31 384-bit memory bus.
This rendering also alleges that AMD's RDNA 3 flagship silicon will have 64MB of Infinity Cache on each of its memory dies. This would give Navi 31 a total of 384MB of Infinity Cache.
AMD rumours have been changing a lot over the past few weeks, moving quickly from "Navi 31 definately has two compute chiplets" to "it now has a single compute chiplet and different specifications". We are still months away from RDNA 3's launch, and it is likely that a lot of false information will be distributed before then. This will lead to a lot of confusion, especially as AMD's RDNA 3 launch approaches.