AMD has included the latest information on future cache sizes RDNA 3 “Navi 3X” GPU. Under Linux patches.
Next generation AMD RDNA 3 GPU for the Navi 3X line to double the size of the compute cache and shadow array
Posted more in FreeDesktop Linux Archive Discovered by Aaron Liu of AMD Dream of Koalakanth And Kepler 2In this article, we will look at the first details on cache size in upcoming RDNA 3 GPUs such as the recently leaked Navi 31, Navi 32 and Navi 33 chips.
Coming to the details, the AMD RDNA 3 GPU range (GFX11) will have double the L0 vector cache for compute or CU and also double the GL1 data cache (RDNA L1 cache for Shader or SA array. vector file for SIMD will increase to 192KB vs 128KB on RDNA 2, L0 vector / texture cache will increase from 16KB to 32KB for CU, and GPU data cache L1 per Shader array will increase from 128KB to 256KB while the L2 data cache will remain the same as RDNA 2.
There are also cache sizes included in AMD’s Navi 33 and Phoenix APUs which will also feature an RDNA 3 graphics core but in a monolithic package. L0 Vector / Texture is increased from 16KB to 32KB while the L1 data (graphics) cache is 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 Nafi 31/32) | Phoenix (GC 11.0.1, GFX1103) |
|---|---|---|---|
| Vector log file L0 لكل SIMD | 128 KB | 192 KB | 128 KB |
| L0 vector data (for CU) | 16 KB | 32 KB | 32 KB |
| Inst scalar L1. (for WGP) | 32 KB | 32 KB | 32 KB |
| Standard L1 data (for WGP) | 16 KB | 16 KB | 16 KB |
| GL1 history (for SA) | 128 KB | 256 KB | 256 KB |
| L2 data | 2048 KB (2 MB) | 2048 KB (2 MB) | 2048 KB (2 MB) |
| L3 (mol) | Unavailable | Yes | Unavailable |
Coelacanth-Dream also claims that all RDNA 3 “Navi 3X” GPUs are equipped with VODP instructions (Wave32 version) and WMMA (Wave Matrix Multiply-Accumulate) support and the performance for each WGP has been significantly improved. The increased GL1 cache is said to improve pixel processing performance and is among the many changes AMD is making within its RDNA 3 Navi 3x GPU family.
AMD confirmed That its RDNA 3 GPUs will arrive later this year with a huge performance boost. David Wang, senior vice president of engineering at the company, Radeon Technologies Group, said the next generation of Radeon RX 7000 series GPUs will deliver more than 50% performance per watt boost over current RDNA 2 GPUs. of AMD’s highlighted RDNA 3 GPUs will include:
- 5 nm process node
- Advanced chiplet packaging
- Revised unit of account
- Improved graphics pipeline
- The next generation of AMD Infinity cache
- > 50% Perf / Watt vs RDNA 2
AMD will redesign the processing modules within RDNA 3 to offer improved ray tracing capabilities. While there is no mention of what these capabilities are if we are to guess, we’d say they definitely talk about performance and an advanced feature set on the RDNA 3 GPU cores of the Radeon RX 7000 graphics cards. AMD Radeon RX 7000 Graphics Cards Will Launch Later This Year And Offer 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 | navel 21 | navel 33 | navel 32 | navel 31 | 3X ships |
|---|---|---|---|---|---|
| Code name | Siena Seychlid | Bonfish Hotpink | wheat people | Bloom Bonito | to be announced later |
| How the GPU works | 7 nm | 6 nm | 5 nm / 6 nm | 5 nm / 6 nm | 5 nm / 6 nm |
| GPU package | congener | congener | MCM (1 GCD + 4 MCD) | MCM (1 GCD + 6 MCD) | Millions of cubic meters (to be confirmed) |
| GPU model size | 520 mm2 | 203 mm2 (GCD only) | 200 mm2 (GCD only) 425 mm2 (with MCD) |
308 mm2 (GCD only) 533 mm2 (with MCD) |
to be announced later |
| Shader motors | 4 | 2 | 4 | 6 | 8 |
| WGP GPU | 40 | 16 | 30 | 48 | 64 |
| SP for WGP | 128 | 256 | 256 | 256 | 256 |
| Calculation unit (per model) | 80 | 32 | 60 | 96 | 128 (per GPU) 256 (total) |
| cores (per nut) | 5120 | 4096 | 7680 | 12288 | 8192 |
| core (total) | 5120 | 4096 | 7680 | 12288 | 16384 |
| Memory bus | 256 idols | 128 idols | 256 idols | 384 idols | 384 bit x2? |
| type of memory | GDDR6 | GDDR6 | GDDR6 | GDDR6 | GDDR6 |
| Memory capacity | up to 16GB | up to 8 GB | up to 16GB | up to 24 GB | up to 32GB |
| Memory speed | 16-18 Gbps | to be announced later | to be announced later | 20 Gbps | to be announced later |
| Memory band | 512-576 GB / sec | to be announced later | to be announced later | 960 GB / sec | to be announced later |
| infinite cache | 128 MB | 32 MB | 64 MB | 96/192 MB | to be announced later |
| Flagship SKU | Radeon RX 6900 XTX | Radeon RX 7600 XT? | Radeon RX 7800 XT? Radeon RX 7700 XT? |
Radeon RX 7900 XT? | go to the radio |
| TBP | 330 W | ~ 150 watts | ~ 250 watts | ~ 350 W | to be announced later |
| publication | Fourth quarter 2020 | fourth quarter 2022? | fourth quarter 2022? | fourth quarter 2022? | 2023? |
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