AMD’s RDNA 3 flagship will reportedly hit retail right before the holiday season. According to Greymon55, the Radeon RX 7900 XT powered by the Navi 31 core will be launched in November, in line with the tipster’s earlier claims. Packing a total of seven chiplets, one compute and six memory complex dies, it’ll approximately offer double the performance of the RX 6900 XT with comparable TGPs.
The 5nm GCD on the RX 7900 XT will feature 12,288 cores across 96 CUs and 48 WGPs alongside 16 or 32GB of GDDR6 memory. Each of the 6nm MCDs will feature a 64-bit memory controller and a chunk of the L3 “Infinity” Cache for a total bus width of 384-bit. The Infinity Cache will be 3D stacked on the MCDs (as well? (Zolpidem) ) for an overall LLC of 256MB or more. The TGP shouldn’t be much higher than the RX 6900 XT, staying mostly under 400W.
| 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 |
By targeting a November launch for the Radeon RX 7900 XT, AMD has essentially given NVIDIA two to three months of free reign with the RTX 4090, granted that it actually ends up launching in August or September.
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