Tuesday, December 7, 2021

AMD officially lists its upcoming Navi 31 and Navi 33 GPUs on the ROCm GPUOpen platform

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Advanced micro devices,  the biggest rival of Intel has just officially confirmed its two next-generation RDNA3 graphics cards. Not just that but the chipmaker has also confirmed its Navi 31 and Navi 33, which have been added to the support list of the ROCm GPUOpen platform.

This update was spotted by the leaker Komachi, at the latest developer tools update for AMD’s ROCm OpenGL platform which lists down the next-generation RDNA 3 based Navi 31 and Navi 33 GPUs. 

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

This will be the flagship chip of RDNA 3 and will power the next-generation Radeon RX 7900 XT graphics cards. There are also rumours that AMD will drop CU (Compute Units) in favour of WGP (Work Group Processors) on its next-gen RDNA 3 GPUs.

The configuration of the graphics card shows us that it features two GCD’s (Graphics Core Die) as well as 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) and each WGP features 8 SIMD32 units with 32 ALUs (40 SIMD32 per SA / 80 per SE / 240 per GCD / 480 in total).

We have also heard various rumours stating that the upcoming are RDNA 3 graphics card is going to outperform NVIDIA’s upcoming graphics cards. As for whether these rumours are true only time can tell. 

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AMD RDNA 3 Navi 33 GPUs For Radeon RX 7600 Series

The graphics card feature a single die and will be very similar to the flagship Navi 21  graphics card and we’ll make complete utilisation of this 6 NM process node used for its fabrication. 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).

This graphics card will also carry up to 256 MB of infinity catch and will also feature two memory connect links of 32bit. This makes the graphics card have a total of a 128-bit bus interface. 

AMD RDNA 3 Navi 3X GPU Configurations (Preliminary)

GPU NameNavi 21Navi 33Navi 32Navi 31
GPU Process7nm6nm5nm/6nm5nm/6nm
GPU PackageMonolithicMonolithicMCMMCM
Shader Engines424 (2 per GCD)6 (3 per GCD)
GPU GPS402040 (20 per GCD)60 (30 per GCD)
SPs Per WGP128256256256
Compute Units (Per Die)804080
160 (Total)
240 (Total)
Cores (Per Die)5120512051207689
Cores (Total)512051201024015360
Memory Bus256-bit128-bit192-bit256-bit
Infinity Cache128 MB256 MB384 MB512 MB
Flagship SKURadeon RX 6900 XTXRadeon RX 7600 XT?Radeon RX 7700 XT?Radeon RX 7900 XT?
LaunchQ4 2020Q4 2021?Q4 2021?Q4 2021?


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Avatar of Nivedita Bangari
Nivedita Bangari
I am a software engineer by profession and technology is my love, learning and playing with new technologies is my passion.


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