Samsung makes CPU's, they sell them to API (Alpha Processor, Inc.) that is owned by Samsung. API makes OEM motherboards for the Alpha, and Samsung sells OEM processors. Not only does Samsung do this but Mitsubishi does too, and a few other vendors as well.

Digital made and sold OEM products also, so when Digital merged with Compaq they contnued these products but they not seem to have the focus to sell a lot of OEM. Thus the Alpha OEM market will be done by others.