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DEC sold its StrongARM (ARM-based) business to Intel in 1997, before DEC was taken over by Compaq in 1998. It resulted in Intel's XScale business, which it later sold to Marvell.

Compaq abandoned DEC's Alpha for the HP/Intel Itanic, so Intel didn't get an Alpha business. However, Compaq sold the Alpha IP to Intel in 2001, before the HP takeover in 2002.

I'd be interested to know what happened to the Alpha architects, Richard L. Sites and Richard T. Witek. A quick search doesn't find anything interesting.

I remember there was a breakaway of DEC engineers founding a small chip design company, but can't remember what it was called.