AMD Radeon RX 7900 XT, The Flagship RDNA 3 'Navi 31' GPU Powered Graphics Card, Could Offer Over 3 GHz Clock Speeds & Almost 100 TFLOPs of Performance
Over the last couple of days, there have been several sightings of the AMD RDNA 3 (GFX11) GPUs which have started appearing within the LLVM project within the Linux operating system's drivers and development tools. It looks like AMD is working on at least four new GPUs for now which have been confirmed through their ID leak which is as follows (Credits: @Kepler_L2):
- GFX (1100) - Possible Navi 31 GPU
- GFX (1101) - Possible Navi 32 GPU
- GFX (1102) - Possible Navi 33 GPU
- (GFX 1103) - Possible Phoenix APU
But it looks like the recent reports of NVIDIA making a major change to its Ada Lovelace GPU architecture for GeForce RTX 40 series have also been taken into consideration & leakers are expecting that Ada Lovelace flagships will not only be the first to breach the 100 TFLOPs GPU Compute barrier but also deliver clock rates similar to AMD's RDNA 3 which could be thanks to switching from Samsung's 8nm to TSMC's bleeding-edge 4N node which is an optimized variant based on the TSMC N5 process (5nm).
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.
Upcoming Flagship AMD, Intel, NVIDIA GPU Specs (Preliminary)
| GPU Name | AD102 | Navi 31 | Xe2-HPG |
|---|---|---|---|
| Codename | Ada Lovelace | RDNA 3 | Battlemage |
| Flagship SKU | GeForce RTX 4090 Series | Radeon RX 7900 Series | Arc B900 Series |
| GPU Process | TSMC 4N | TSMC 5nm+ TSMC 6nm | TSCM 5nm? |
| GPU Package | Monolithic | MCD (Multi-Chiplet Die) | MCM (Multi-Chiplet Module) |
| GPU Dies | Mono x 1 | 2 x GCD + 4 x MCD + 1 x IOD | Quad-Tile (tGPU) |
| GPU Mega Clusters | 12 GPCs (Graphics Processing Clusters) | 6 Shader Engines | 10 Render Slices |
| GPU Super Clusters | 72 TPC (Texture Processing Clusters) | 30 WGPs (Per MCD) 60 WGPs (In Total) | 40 Xe-Cores (Per Tile) 160 Xe-Cores (Total) |
| GPU Clusters | 144 Stream Multiprocessors (SM) | 120 Compute Units (CU) 240 Compute Units (in total) | 1280 Xe VE (Per Tile) 5120 Xe VE (In Total) |
| Cores (Per Die) | 18432 CUDA Cores | 7680 SPs (Per GCD) 15360 SPs (In Total) | 20480 ALUs (In Total) |
| Peak Clock | ~2.85 GHz | ~3.0 GHz | TBD |
| FP32 Compute | ~105 TFLOPs | ~92 TFLOPs | TBD |
| Memory Type | GDDR6X | GDDR6 | GDDR6? |
| Memory Capacity | 24 GB | 32 GB | TBD |
| Memory Bus | 384-bit | 256-bit | TBD |
| Memory Speeds | ~21 Gbps | ~18 Gbps | TBD |
| Cache Subsystems | 96 MB L2 Cache | 512 MB (Infinity Cache) | TBD |
| TBP | ~600W | ~500W | TBD |
| Launch | Q4 2022 | Q4 2022 | 2023 |
Source: https://wccftech.com/amd-radeon-rx-7900-xt-rdna-3-navi-31-gpu-graphics-card-100-tflops-3-ghz-rumor/
