September 30, 2022

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AMD RDNA 3 "Navi 3X" GPUs have dual-cache per-matrix arithmetic and shaders

AMD RDNA 3 “Navi 3X” GPUs have dual-cache per-matrix arithmetic and shaders

AMD has added the latest information about future cache sizes RDNA 3 “Navi 3X” GPUs Under Linux patches.

AMD RDNA 3 Next Generation Navi 3X Series GPUs Double Compute Cache and Shadow Array

More Posted in FreeDesktop Linux Repository Discovered by AMD’s Aaron Liu dream koalakanth and the Kepler 2In this article, we will see the first details about cache sizes in upcoming RDNA 3 GPUs, such as the recently leaked Navi 31, Navi 32 and Navi 33 chips.

As for details, the AMD RDNA 3 (GFX11) GPU array has twice the L0 vector cache per compute or controller, as well as twice the GL1 data cache (RDNA L1 cache per Shader or SA array. Depending on For the new information, the Vector log file for each SIMD will increase to 192KB against 128KB on RDNA 2, the L0 Vector/Texture cache will increase from 16KB to 32KB per CU, and the GPU L1 data cache for each Shader array will increase by 128 KB to 256 KB while the L2 data cache remains the same as RDNA 2.

Cache sizes are also included in AMD’s Navi 33 and Phoenix APUs which will also have an RDNA 3 graphics core, but in a monolithic package. L0 Vector/Texture has been increased from 16KB to 32KB, while L1 data (graphics) cache has been increased from 128KB to 256KB. The log file size remains the same on Navi 33 GPUs and Phoenix APUs.

Cache information Yellow carp (Rembrandt) RDNA 3 (GFX11 NAVI 31/32) Phoenix (GC 11.0.1, GFX1103)
L0 Vector Register File per SIMD 128 KB 192 KB 128 KB
L0 vector data (per CU) 16 kb 32 KB 32 KB
Inst Volumetric L1. (per WGP) 32 KB 32 KB 32 KB
L1 numerical data (per WGP) 16 kb 16 kb 16 kb
GL1 history (per SA) 128 KB 256 KB 256 KB
L2. data 2048 KB (2 MB) 2048 KB (2 MB) 2048 KB (2 MB)
L3 (mole) not available yes not available

Coelacanth-Dream also states that all RDNA 3 “Navi 3X” GPUs come with VODP instructions (Wave32 version) and WMMA (Wave Matrix Multiply-Accumulate) support and that performance for each WGP is significantly improved. The increased GL1 cache is said to improve pixel processing performance and is one of many changes AMD is making to the RDNA 3 Navi 3x GPU family.

AMD confirmed These are the RDNA 3 GPUs coming later this year with a massive performance boost. The company’s next-generation Radeon RX 7000 GPUs will deliver over 50% more performance per watt lift compared to current RDNA 2 GPUs, said David Wang, the company’s senior vice president of engineering for the Radeon Technologies Group. Some of the key features of RDNA 3 GPUs highlighted by AMD include:

  • 5nm process node
  • Advanced chiplet packaging
  • Revised unit of account
  • Enhanced graphics pipeline
  • The next generation of AMD Infinity cache
  • >50% performance/watt vs. RDNA 2

AMD will redesign the computer modules in RDNA 3 to provide improved ray tracing capabilities. While there’s no mention of what this capability is if we have to guess, we’d say it definitely speaks volumes for the performance and advanced feature set in the Radeon RX 7000’s RDNA 3 GPU core. AMD Radeon RX 7000 graphics cards will be launched later this year and will bring a huge leap in gaming performance So stay tuned for more information in the coming weeks.

AMD RDNA 3 Navi 3X GPU Configurations (Initial)

GPU name Navi 21 Navigation 33 Navigation 32 Navigation 31 Navi 3X
Code name Sienna Cichlid Hotpink Bonfish wheat people Bloom Bonito It will be announced later
GPU editing 7 nm 6 nm 5 nm / 6 nm 5 nm / 6 nm 5 nm / 6 nm
GPU Package homogeneous homogeneous MCM (1 GCD + 4 MCD) MCM (1 GCD + 6 MCD) Million cubic meters (TBC)
GPU Template Size 520 mm 2 203 mm2 (GCD only) 200 mm2 (GCD only)
425 mm2 (with MCDs)
308 mm2 (GCD only)
533 mm2 (with MCDs)
It will be announced later
Shader for cars 4 2 4 6 8
GPU WGPs 40 16 30 48 64
SP per WGP 128 256 256 256 256
Calculation units (per model) 80 32 60 96 128 (per GPU)
256 (total)
cores (per die) 5120 4096 7680 12288 8192
cores (total) 5120 4096 7680 12288 16384
Memory bus 256 bit 128 bit 256 bit 384 bit 384 bit x2?
Memory type: GDDR6 GDDR6 GDDR6 GDDR6 GDDR6
Memory capacity up to 16 GB up to 8 GB up to 16 GB up to 24 GB up to 32 GB
Memory speed 16-18 Gbps It will be announced later It will be announced later 20 Gbps It will be announced later
Memory bandwidth 512-576 GB/sec It will be announced later It will be announced later 960 GB/sec It will be announced later
infinite hideout 128 MB 32 MB 64 MB 96/192 MB It will be announced later
Flagship SKU Radeon RX 6900 XTX Radeon RX 7600XT? Radeon RX 7800XT?
Radeon RX 7700XT?
Radeon RX 7900XT? Radeon Pro
TBP 330 W ~ 150 watts ~ 250 watts ~ 350 W It will be announced later
Release Fourth Quarter 2020 Fourth quarter 2022? Fourth quarter 2022? Fourth quarter 2022? 2023?

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