Breaking News

AMD Next-Gen RDNA 3 Navi 31 & Navi 33 GPUs Listed In ROCm OpenGPU Platform

AMD has officially confirmed two of its next-generation RDNA 3 GPUs, the Navi 31 and Navi 33, which have been added to the support list of the ROCm GPUOpen platform. Aside from these, ROCm listing also confirms Rembrandt and Van Gogh APUs.

AMD RDNA 3 Navi 31 & Navi 33 GPUs Confirmed In Latest ROCm OpenGPU Platform Support List

Spotted by Komachi, the latest developer tools update for AMD’s ROCm OpenGL platform lists down the next-generation RDNA 3 based Navi 31 and Navi 33 GPUs. There were recent reports which alleged that AMD will be taping out its next-generation GPUs later this year & this could possibly be preliminary support for developers.

AMD Grows Its CPU Market & Revenue Share in Q2 2021, Server & Notebook Segments Post Big Wins & Achieve 14-Year High

AMD Next-Gen RDNA 3 Based Navi 31 and Navi 33 GPUs spotted within AMD’s ROCm OpenGPU Platform update. (Image Source: Komachi)

AMD RDNA 3 Navi 31 GPUs For Radeon RX 7800/7900 Series

The AMD Navi 31 GPU, the flagship RDNA 3 chip, would power the next-gen Radeon RX 7900 XT graphics card. We have heard that AMD will drop CU (Compute Units) in favor of WGP (Work Group Processors) on its next-gen RDNA 3 GPUs.

A preliminary block diagram of AMD’s next-gen RDNA 3 based Navi 31 GPU that will power the flagship Radeon RX 7900 XT graphics card. (Image Credits: Olrak)

The Navi 31 GPU configuration shown here features two GCD’s (Graphics Core Die) and a single MCD (Multi-Cache Die). Each GCD has 3 Shader Engines (6 in total) and each Shader Engine has 2 Shader Arrays (2 per SE / 6 per GCD / 12 in total). Each Shader Array is composed of 5 WGPs (10 per SE / 30 per GCD / 60 in total) and each WGP features 8 SIMD32 units with 32 ALUs (40 SIMD32 per SA / 80 per SE / 240 per GCD / 480 in total). These SIMD32 units combine to make up 7,680 cores per GCD and 15,360 cores in total.

The Navi 31 (RDNA 3) MCD will be linked to the dual GCD’s via a next-generation Infinity Fabric interconnect and feature 256-512 MB of Infinity Cache. Each GPU should also feature 4 memory connect links (32-bit). That’s a total of 8 32-bit memory controllers for a 256-bit bus interface.

There have been several rumors stating that the upcoming RDNA 3 GPUs are going to outperform whatever NVIDIA has to offer in terms of rasterization performance. It looks like AMD will take the lead by offering the first MCM-powered GPUs under its Radeon RX graphics card lineup. But at the same time, NVIDIA is expected to quickly transition to its MCM GPU lineup which will offer over 3x performance boost over Ampere GPUs.

Minisforum To Launch AMD Ryzen 7 5700G APU Based Mini PC, Compares Performance With Ryzen 9 5900HX

AMD RDNA 3 Navi 33 GPUs For Radeon RX 7600 Series

The AMD Navi 33 GPU will start the monolithic segment within the RDNA 3 family. The GPU will feature a single die. The die is very similar to the flagship Navi 21 GPU and is expected to utilize a 6nm process node for fabrication.

A preliminary block diagram of AMD’s next-gen RDNA 3 based Navi 33 GPU that will power the flagship Radeon RX 7600 XT graphics card. (Image Credits: Olrak)

The Navi 33 GCD has 2 Shader Engines and each Shader Engine has 2 Shader Arrays (2 per SE / 4 in total). Each Shader Array is composed of 5 WGPs (10 per SE / 20 total) and each WGP features 8 SIMD32 units with 32 ALUs (40 SIMD32 per SA / 80 per SE / 160 total). These SIMD32 units combine to make up 5120 cores which is the same core count as the RX 6900 XT (Navi 21 XTX GPU).

The Navi 33 (RDNA 3) is expected to carry 256 MB of Infinity Cache. Each GPU should also feature 2 memory connect links (32-bit). That’s a total of 4 32-bit memory controllers for a 128-bit bus interface. This would bring the performance of the AMD Radeon RX 7600 series above the RX 6800 and RX 6900 series at a TDP of around 200W.

AMD RDNA 3 Navi 3X GPU Configurations (Preliminary)

GPU Name Navi 21 Navi 33 Navi 32 Navi 31
GPU Process 7nm 6nm 5nm/6nm 5nm/6nm
GPU Package Monolithic Monolithic MCM MCM
Shader Engines 4 2 4 (2 per GCD) 6 (3 per GCD)
GPU WGPs 40 20 40 (20 per GCD) 60 (30 per GCD)
SPs Per WGP 128 256 256 256
Compute Units (Per Die) 80 40 80
160 (Total)
120
240 (Total)
Cores (Per Die) 5120 5120 5120 7689
Cores (Total) 5120 5120 10240 15360
Memory Bus 256-bit 128-bit 192-bit 256-bit
Memory Type GDDR6 GDDR6 GDDR6 GDDR6
Infinity Cache 128 MB 256 MB 384 MB 512 MB
Flagship SKU Radeon RX 6900 XTX Radeon RX 7600 XT? Radeon RX 7700 XT? Radeon RX 7900 XT?
TBP 330W ~200W ~300W ~400W
Launch Q4 2020 Q4 2021? Q4 2021? Q4 2021?

The AMD RDNA 3 ‘Navi 3X’ GPU-powered Radeon RX graphics card lineup is expected to offer up to 3x performance improvement over existing RDNA 2 offerings. It would mark a major leap forward for graphics evolution and now that AMD is already onboard with next-gen technologies such as FSR and Raytracing, expect a very heated next-gen competition between the red and green teams.



Check Also

COLORFUL Unveils GeForce RTX 3070 Customization Series Graphics Cards

Colorful just launched its new alternative to its iGame RTX 3070 LHR Bilibili Edition, the …