Yeah it's 3D-stacked. 4 layers for HBM, 4 for HBM and 12 for HBM2E. It's neat but really expensive, and I don't think the gains for RAM in that sort of designs

Yeah it's 3D-stacked. 4 layers for HBM, 4 for HBM and 12 for HBM2E. It's neat but really expensive, and I don't think the gains for RAM in that sort of designs are that big compared to computing cores outside of edge cases.