We’re not officially allowed to publish much yet, but I’ve already summarized everything AMD has allowed us to know about the upcoming Radeon RX 6600 XT for today. Today, that means, AMD will unveil this graphics card at Chinajoy 2021. The event will take place this weekend, starting on Friday July 30, 2021 and it is considered certain that the card will finally be unveiled at the event as well.
There’s no mention of the RX 6600 Non-XT yet, but we’ll see what else AMD has in store. After all, the embargoes associated with this new RX 6600 XT have already been leaked extensively in the appropriate media: AMD’s announcement today, the unboxing reviews on August 6, and the launch on August 11, though it’s also been rumored often enough that testing and final details could probably be released as early as August 10, 2021. We’ll see.
The AMD Radeon RX 6600 XT relies on the Navi 23 XT GPU, which has 32 compute units or 2048 stream processors. The card also features 32MB of Infinity Cache and 8GB of GDDR6 memory running over a 128-bit wide bus interface. The Navi 23 GPU itself measures 237 mm2 and consists of 11.06 billion transistors. However, the GPU is still not the smallest chip in the RDNA 2 family, as Navi 24 is still expected here for the absolute entry-level range.
The memory speed will be at the usual 16 Gbps, which will then give a total bandwidth of 256 GB/s. Regarding the presumed performance data, it’s definitely worth taking a look at the slides in the gallery (see below). Even if AMD always cherry-picks such things (they deserve it), the values have actually always been right in the last time. They’re looking to go head-to-head with NVIDIA’s GeForce RTX 3060 and it’ll be interesting to see what the full range of benchmarks come up with then.
The ancestor gallery of the RDNA2 family looks like this after the launch:
| Model | AMD Radeon RX 6600 XT | AMD Radeon RX 6700 XT | AMD Radeon RX 6800 | AMD Radeon RX 6800 XT | AMD Radeon RX 6900 XT | AMD Radeon RX 6900 XT LC |
|---|---|---|---|---|---|---|
| GPU | Navi 23 (XT?) | Navi 22 (XT?) | Navi 21 XL | Navi 21 XT | Navi 21 XTX | Navi 21 XTXH |
| Process node | 7 nm | 7 nm | 7 nm | 7 nm | 7 nm | 7 nm |
| The Size | 237 mm2 | 336 mm2 | 520 mm2 | 520 mm2 | 520 mm2 | 520 mm2 |
| Transistors |
11.06 billion | 17.2 billion | 26.8 billion | 26.8 billion | 26.8 billion | 26.8 billion |
| Compute units | 32 | 40 | 60 | 72 | 80 | 80 |
| Shader | 2048 | 2560 | 3840 | 4608 | 5120 | 5120 |
| TMUs/ROPs | TBA | 160/64 | 240 / 96 | 288 / 128 | 320 / 128 | 320 / 128 |
| Game clock | 2359 MHz | 2424 MHz | 1815 MHz | 2015 MHz | 2015 MHz | 2250 MHz |
| Boost Clock | TBA | 2581 MHz | 2105 MHz | 2250 MHz | 2250 MHz | 2345 MHz |
| Memory GDDR6 |
8 GB | 12 GB | 16 GB | 16 GB | 16 GB | 16 GB |
| Infinity cache | 32 MB | 96 MB | 128 MB | 128 MB | 128 MB | 128 MB |
| Memory bus | 192-bit | 192-bit | 256-bit | 256-bit | 256-bit | 256-bit |
| Memory clock | 16 Gbps | 16 Gbps | 16 Gbps | 16 Gbps | 16 Gbps | 18 Gbps |
| Bandwidth | 256 GB/s | 384 GB/s | 512 GB/s | 512 GB/s | 512 GB/s | 576 GB/s |
| TDP | 160 W | 230 W | 250 W | 300 W | 300 W | 330 W |
Of course I will stay tuned and will actively accompany the launch. You know, this time also with teardown again….
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