Not a hardware engineer, but it's mainly because of RAM wires/channels (not implying that this is "simple" form an engineering perspective).
Using the published bandwidths, the math is 170 * 1 and 153 * 8.
Using the published bandwidths, the math is 170 * 1 and 153 * 8.
Even the GTX 1080, launched ten years ago, has double the bandwidth!
This must be some different way of measuring the bandwidth right? Since they explicitly say this for AI, but the numbers they share don't show that at all. Or I gravely misunderstand something here.
That's marketing spin indeed (or lies, if you prefer).