Following Wednesday's announcement of the Radeon RX 6000 series with product launches on October 28, the rumor mill started rolling full steam ahead. The RX 6000 series GPUs by AMD will be based on the RDNA2 graphics architecture, the same exact architecture powering the Xbox Series X and PlayStation 5, and will feature DirectX 12 Ultimate support, including hardware raytracing. A PC enthusiast on Chinese microblogging site Bilibili posted a picture of an alleged "Big Navi" prototype. Since its July 2019 debut, there have been rumors of AMD working on a new high-end GPU to take on the upper-segment of NVIDIA, given that the RX 5700 series offered competitive performance to NVIDIA's breadwinning products, such as the RTX 2070 series and RTX 2060 series.

The picture reveals the reverse side of the alleged "Big Navi" prototype's PCB, showing a larger cluster of GPU ancillaries than those behind a "Navi 10," and eight memory pads with the paper labels "Typical XT ASIC" references for a "16 Gb Samsung GDDR6 memory." Over a 256-bit wide memory interface, the chip should hence have 16 GB of GDDR6 memory. Since this is a prototype, several headers are sticking out of the PCB for the design and prototyping of the product. A tower-type CPU cooler has been MacGyvered onto the GPU (which isn't uncommon for VGA prototypes). We'll hear a lot more about this product in the run up to its October 28 launch.