What does "2-die design" mean in Blackwell?

Modern chip manufacturing has physical size limits (reticle limit). Blackwell overcomes this by using two GPU dies connected via an ultra-fast interconnect at 10TB/s, making them function as a single GPU with 208 billion transistors. This multi-die approach allows NVIDIA to create larger, more powerful GPUs than would be possible with a single die while maintaining high manufacturing yields.