NVIDIA RTX 6000D appears in a teardown video with 84GB GDDR7, 448-bit bus, and fewer CUDA cores than RTX PRO 6000 Blackwell.
It seems NVIDIA is changing up the memory layout for its new GeForce RTX 5090 over the current-gen RTX 5090, with the GB202 "Blackwell" GPU inside, next-gen GDDR7 memory on a huge 512-bit memory bus.