https://wccftech.com/amd-instinct-mi300-cdna-3-5nm-3d-stacking-gpu-8-compute-dies-hbm3-pcie-5-600w/

AMD Instinct MI300 GPUs which will be powered by the next-generation CDNA 3 architecture have been detailed by Moore's Law is Dead. The new GPUs will be powering the upcoming data centers and are rumored to be the first to incorporate a 3D-Stacking design.

Last year, @Kepler_L2 revealed that the AMD Instinct MI300 was going to feature four Graphics Compute Dies. Later this was confirmed in a patch where the chip appeared as the 'GFX940' part. This was essentially going to double the MI250X which features two GCDs but the difference is that each GCD will feature two Compute dies. So for the Instinct MI300, we are going to get up to 8 GCDs on the top variant. In fact, the Instinct MI300 family will not be a singular GPU but will comprise several different configurations.