Officially, the chip is Navi 21 and will show up in Radeon RX 6900 XT, 6800 XT, and 6800 GPUs. But taking a cue from the enthusiast community, AMD has adopted the name Big Navi. And it really is big.
Big Navi contains 26.8 billion transistors, which is just five percent shy of Nvidia’s GA102 chip. But the way AMD and Nvidia are using those billions of transistors is very different. AMD hasn’t revealed the official die size (we estimate it’s around 535mm square), but looking at the die shot, the Infinity Cache occupies about 17 percent of the total chip area—it could be more, but the provided die shots often have artistic interpretations, so there’s a margin of error.