If you watch the movie johnny mnemonic, they throw around data cubes the size of a stamp. Modern nvme ssds weigh around 4 grams per TB. So we've already achieve

If you watch the movie johnny mnemonic, they throw around data cubes the size of a stamp. Modern nvme ssds weigh around 4 grams per TB. So we've already achieved scifi movie parity :D. The only problem is the price.