Robert P. "Bob" Colwell (born 1954) is an electrical engineer who worked at Intel and is now Deputy Director of the Microsystems Technology Office (MTO) at DARPA. He was the chief IA-32 architect on the Pentium Pro, Pentium II, Pentium III, and Pentium 4 microprocessors. Bob retired from Intel in 2000. He was an Intel Fellow from 1995 to 2000.
Colwell earned the ACM Eckert-Mauchly Award in 2005, and wrote the "At Random" column for Computer, a journal published by the IEEE Computer Society.
Colwell is the author of several papers in addition to the book The Pentium Chronicles: The People, Passion, and Politics Behind Intel's Landmark Chips, ISBN 0-471-73617-1.
Besides being a prolific computer architect, Colwell is known to be a charismatic speaker and is highly respected as an engineer both inside and outside Intel. He has spoken at universities on the numerous challenges in chip design and management principles needed to tackle them.
Colwell grew up in a small blue collar town in Pennsylvania and was born into a family of six children. His father was a milkman for 35 years and his parents worked hard to provide for their children. Colwell was raised with strong family values and an emphasis on education. He attended the University of Pittsburgh to get an undergraduate degree in Electrical Engineering. He later attended Carnegie Mellon University to get a PhD in Electrical Engineering. Colwell worked at a company called Multiflow in the late 1980s as a design engineer. In 1990 he joined Intel as a senior architect and was involved in the development of the P6 "core". The P6 core was used in the Pentium Pro, Pentium II, and Pentium III microprocessors, and designs derived from it are used in the Pentium M, Core Duo and Core Solo, and Core 2 microprocessors sold by Intel.
Colwell is a devout family man, and is married to the woman he met in college. As of 2006, he was married to her for 28 years. He has 3 children.