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Radeon RX 7900 XT and XTX
Radeon RX 7900 XT will have 20GB of GDDR6 VRAM and 10,752 shader cores, it probably will not be as fast as the RTX 4090, which closes in at 100 teraflops but might match the 4080. Instead, it looks like the RX 7900 XT may aim for 53 teraflops if it launches with the above core specs. The XTX is listed at 61 TFLOPS.
AMD turned off some shading units on the Radeon RX 7900 XT with 20GB to reach its target performance. This is different from the fully unlocked Radeon RX 7900 XTX, which uses the same GPU but has all 12288 shaders turned on. The AMD Radeon RX 7900 XT uses two slots, so it gets power from two 8-pin connectors. The maximum board power it can use is 300W. There is one HDMI 2.1 output and three DisplayPort 2.0 outputs. During the presentation, there was no mention of PCI-Express 5.0 x16 connects, so we assume PCI-Express 4.0 for Radeon RX 7900 XT connects to the rest of the system. The card will cost $899
Radeon RX 7900 XTX will have 24GB of GDDR6 VRAM and the complete 12,288 shader cores, it will probably get close to the RTX 4090 thanks to its infinity cache as well. As mentioned AV1 en/decode is present. TBP is 355 Watt, and this card will cost $999 with availability on December 13th, just before Christmas. And that about sums it up for the info we have available.
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|---|---|---|---|
| Radeon | RX 7900 XTX | RX 7900 XT | 6950 XT |
| GPU | Navi 31 XTX | Navi 31 XT | Navi 21 KXTX |
| Process Node | 5nm+6nm | 5nm+6nm | 7nm |
| Die Size | 308mm2 (single GCD) 533mm2 (with MCDs) |
308mm2 (singleGCD) 533mm2 (with MCDs) |
520mm2 |
| Transistors | 58 Billion | 58 Billion | 26.8 Billion |
| GPU WGPs | 48 | 42 | 40 |
| Stream Processors | 12288 | 10752 | 5120 |
| TMUs/ROPs | TBD | TBD | 320 / 128 |
| Game Clock | 2.3 GHz | 2 GHz | 2100 MHz |
| Boost Clock | 2310 MHz | ||
| FP32 TFLOPs | 61 TFLOPs | 53 TFLOPs | 23.65 TFLOPs |
| Memory Size | 24 GB GDDR6 | 20 GB GDDR6 | 16 GB GDDR6 |
| Infinity Cache | 96 MB | 80 MB | 128 MB |
| Memory Bus | 384-bit | 320-bit | 256-bit |
| Memory Clock | 20 Gbps | 20 Gbps | 18 Gbps |
| Bandwidth | 960 GB/s | 800 GB/s | 576 GB/s |
| Effective Bandwidth | 1728.2 GB/s | ||
| TBP | 355W | 300W | 335W |
| PCIe Interface | PCIe 4.0 x16 | PCIe 4.0 x16 | PCIe 4.0 x16 |
| Price | $999 | $899 | $1099 US |
The specifications above are preliminary and will be filled out once more exact info arrives. Still, it gives an excellent overview of what has changed specifications-wise: Following on the next page are photos of the two cards courtesy of AMD.
