I'd agree and I actually came across an article that stated currently there is no way AMD can add more memory due to the current design even if they made it all bigger. That's what the guy said based off info he was told from AMD. They are working on HBM2.0. It will be on the next gen GPUs and upped to 2GB per stack which equates to 8GB per GPU. Maybe they can find a way to be able to add more than just 4 stacks with HBM2.0 is they want bragging rights, either way 8GB is a much needed step up.