You're obviously more familiar with the topic than I so I'll trust your insight into the age of the term and concept, but none of these describe common chipsets

You're obviously more familiar with the topic than I so I'll trust your insight into the age of the term and concept, but none of these describe common chipsets for laptops that a consumer would expect. Unless we're talking a very specific user trying to engage in heavy GPGPU computation here (on a laptop?? I can't imagine the market for this is very large). Most users of apple's M* laptops don't know or care they they have a laptop that shares memory in a different way than the intel laptops generally allowed for.