AMD will be announcing its next-gen RDNA 3 GPU early next month. Team Red is expected to unveil the Radeon RX 7900 XT during a live stream at 4 PM ET on the 3rd of November. Based on the Navi 31 core, it’ll feature seven chiplets, including a 5nm GCD and six 6nm MCDs. The former will feature 12,288 shaders, while each of the latter will consist of a 64-bit memory controller alongside 32MB of L3 cache (16MB stacked atop 16). This adds up to 192MB of L3 cache and a 384-bit bus.
| GPU Name | RX 7700 XT (Navi 33) | RX 7800 XT (Navi 32) | RX 7900 XT (Navi 31) | RX 7950 XT (Navi 30?) |
|---|---|---|---|---|
| Process Node | 6nm | 5nm + 6nm | 5nm + 6nm | 5nm + 6nm |
| Die Config | 6nm x1 | 5nm x1, 6nm x4 | 5nm x1, 6nm x5 | 5nm x1, 6nm x6 |
| Shader Engines | 2 | 4 | 6 | 6 |
| WGPs | 16 | 32 | 48 | 48 |
| CUs | 32 | 64 | 96 | 96 |
| Cores | 4,096 | 8,192 | 10,752? | 12,288 |
| Memory Bus | 128-bit | 256-bit | 320-bit? | 384-bit? |
| Memory Type | GDDR6 | GDDR6 | GDDR6 | GDDR6 |
| Memory Capacity | 8GB | 16GB | 20GB? | 24GB? |
| Infinity Cache | 64MB | 128MB | 192MB | 192MB? |
| TGP | 200W | 250W? | 300? | 350W? |
| Launch | Q4 2022 | Q1 2023 | Q4 2022 | 2023 |
According to a report from WCCFTech, the Radeon RX 7900 XT will come with 20GB of GDDR6 memory, which means a 320-bit memory bus. Furthermore, it won’t be the fastest RDNA 3 GPU, leveraging a cut-down memory bus and GCD. It will compete with the NVIDIA RTX 4090 and make way for the Radeon RX 7950 XT down the cycle. You can expect 24GB of GDDR6 memory and a 384-bit bus paired with the fully enabled Navi 31 core targeting the RTX 4090 Ti.
From what the outlet understands, the Radeon RX 7000 GPUs will offer strong raster performance, perhaps even beating the RTX 4090 in traditional rendering workloads. However, its ray tracing performance will likely fall short of the high-end Ada Lovelace offerings. What’s essential is that AMD come up with a Radeon alternate to DLSS 3 and fast, or there’s no way it’ll be able to stay relevant in the face of increasing RT adoption.
