AMD released its latest RDNA 2 graphics card, the Radeon RX 6600 XT, on August 11, 2021. That card will obviously be followed by a weaker, non-XT model.
It’s unclear when the GPU will be announced, but Igor’s Lab already has an idea of how it’ll perform by benching a Radeon Pro W6600. (According to Igor Wallossek, they use the same chips.)
Igor’s benchmarks suggest that the Radeon RX 6600 will compete quite closely with NVIDIA’s GeForce RTX 3060; the RTX 3060 manages an average score of 100 in the 1080p test, while the emulated Radeon RX 6600 manages an average score of 96. That’s just a four point difference.
Another benchmark teases the power consumption of the Radeon RX 6600. The Radeon RX 6600 is shown consuming 123 watts in the Full HD test, while the GeForce RTX 3060 is substantially more power hungry at 165.6 watts.
The pricing that AMD settles on for the Radeon RX 6600 should be interesting. Nobody seemed happy about the XT version carrying an MSRP of $379.
| Model | RX 6600 EMU | RX 6600 XT (MSI) | RX 6700 XT | RX 6800 | RX 6800 XT | RX 6900 XT |
|---|---|---|---|---|---|---|
| GPU | Navi 23 | Navi 23 | Navi 22 | Navi 21 | Navi 21 | Navi 21 |
| Process node | 7 nm | 7 nm | 7 nm | 7 nm | 7 nm | 7 nm |
| The Size | 237 mm2 | 237 mm2 | 336 mm2 | 520 mm2 | 520 mm2 | 520 mm2 |
| Transistors | 11.06 billion | 11.06 billion | 17.2 billion | 26.8 billion | 26.8 billion | 26.8 billion |
| Compute units | 28 | 32 | 40 | 60 | 72 | 80 |
| Shader | 1792 | 2048 | 2560 | 3840 | 4608 | 5120 |
| TMUs/ROPs | 112 / 64 | 128/64 | 160/64 | 240 / 96 | 288 / 128 | 320 / 128 |
| Game clock | 2331 MHz | 2428 MHz | 2424 MHz | 1815 MHz | 2015 MHz | 2015 MHz |
| Boost Clock | > 2600 MHz* | > 2600 MHz* | 2581 MHz | 2105 MHz | 2250 MHz | 2250 MHz |
| Memory GDDR6 | 8 GB | 8 GB | 12 GB | 16 GB | 16 GB | 16 GB |
| Infinity cache | 32 MB | 32 MB | 96 MB | 128 MB | 128 MB | 128 MB |
| Memory bus | 128-bit | 128-bit | 192-bit | 256-bit | 256-bit | 256-bit |
| Memory clock | 16 Gbps | 16 Gbps | 16 Gbps | 16 Gbps | 16 Gbps | 16 Gbps |
| Bandwidth | 256 GB/s | 256 GB/s | 384 GB/s | 512 GB/s | 512 GB/s | 512 GB/s |
| TDP | 130 W | 160 W | 230 W | 250 W | 300 W | 300 W |
Because the workstation graphics card has the same genes, but has been trimmed a bit for efficiency. This in turn can be easily undone with suitable tools for memory clock and power limit and you quickly get what officially does not exist yet.
Source: Igor’s Lab