Um, a workstation has Xeon and, typically, Quadro graphics cards. These have never had these types of components. I could never perform Workstation-like tasks on these, even when Steve Jobs was around.
The definition of "Workstation" is pretty murky now. Not sure why a Xeon would be required unless you think a workstation requires ECC memory, and it's not clear to me why every workstation use case would.