Caveat emptor, and I've always been aware that updates I get direct from the GPU manufacturer may not work on a particular implementation. It is highly likely

Caveat emptor, and I've always been aware that updates I get direct from the GPU manufacturer may not work on a particular implementation. It is highly likely that they just don't hardware qualify all the vendors that use their GPUs, so cannot state which ones will benefit. Sensible policy that says more about the vendors that integrate the GPU than it does about the supplier.