Since Radeon VII's HBM provides 1TBs of bandwidth with a 4096 bus just up it to 20,480 bits and bam 5TBs. Not sure how you'd fit 20 stacks on an interposer. I

Since Radeon VII's HBM provides 1TBs of bandwidth with a 4096 bus just up it to 20,480 bits and bam 5TBs. Not sure how you'd fit 20 stacks on an interposer. I can't solve all your problems.