AMD's 7 nm "Navi 21" silicon powers the company's Radeon RX 6800 series and flagship RX 6900 XT graphics cards. It's a big chip, competitive with NVIDIA's fastest GeForce RTX 30-series products, and AMD set 16 GB as the standard memory amount for all products based on this chip, despite its 256-bit wide GDDR6 memory interface. Komachi Ensaka spotted a curious-looking Navi 21 product with 8 GB of memory, on the UserBenchmark database. The card is slower than the desktop RX 6800, but found trading blows with the RX 6700 XT. Speculation is rife as to what it could be.

The most plausible theory is that it could be a prototype, with its user testing out UserBenchmark. The GeForce RTX 3070 Super has a shaky performance equation with the similarly-priced RX 6800, and any attempt to close the gap between the RX 6700 XT and the RX 6800 would cannibalize the latter, unless that's exactly what AMD wants—a product competitive with the RTX 3070 Super, but with a leaner bill of materials than the RX 6800 on account of the 8 GB memory.