I'm not sure what it would look like in the video [d]ecoder world, but I don't think that would matter since most the time you'd want to use the 256-bit vector instructions (in practice this would hardly be a high priority until they're nearly ubiquitous...). For use cases where you are addressing large memory regions this hardly seems like that big of a deal. There are times when you can schedule tons of calculations without leaving L1 but for some odd reason people are finding 500GB+ of RAM useful.