Jim Keller (engineer)
Jim Keller | |
|---|---|
| Born | 1958/1959 New Jersey, U.S. |
| Occupation(s) | Microprocessor engineer, executive |
| Years active | 1982–present |
| Known for | AMD K8 microarchitecture, Athlon (K7), Apple A4 and A5 chips, x86-64 instruction set, HyperTransport technology |
James B. Keller (born 1958/1959) is a distinguished American engineer specializing in microprocessor design, recognized for his contributions at AMD, Apple, and Tesla. He served as the principal architect behind the AMD K8 microarchitecture, which includes the original Athlon 64, and played a key role in developing the Athlon (K7) as well as the Apple A4 and A5 chips. Keller was also instrumental in coauthoring the specifications for the x86-64 instruction set and the HyperTransport interconnect technology.
Between 2012 and 2015, he rejoined AMD to oversee the creation of the AMD K12 and Zen microarchitectures, critical to AMD’s resurgence in the CPU marketplace. His leadership positions within these organizations underscore his significant impact on advancing processor technology and enhancing performance essential for industry competitiveness.
Education
He earned a B.S. degree in electrical engineering from Pennsylvania State University in 1980.
Career
Keller began his professional journey at DEC in 1982, where he remained until 1998. During this period, he contributed to several processors including the VAX 8800, Alpha 21164, and Alpha 21264. Prior to DEC, he worked at Harris Corporation focusing on microprocessor board development. In 1998, Keller joined AMD, playing a significant role in launching the AMD Athlon (K7) processor and leading the design of the AMD K8 microarchitecture. This included developing the x86-64 instruction set and HyperTransport interconnect aimed at enhancing multiprocessing communication.
In 1999, Keller departed AMD to join SiByte, where he designed processors based on the MIPS architecture for high-performance networking equipment. Following Broadcom’s acquisition of SiByte in 2000, he served as chief architect until 2004.
Subsequently, he took on the role of Vice President of Engineering at P.A. Semi, a company specializing in low-power mobile processors. After Apple acquired P.A. Semi in early 2008, Keller transitioned to Apple, leading the design efforts for the Apple A4 and A5 system-on-chip processors utilized in devices such as the iPhone 4, iPhone 4S, and early iPad models.
Keller returned to AMD in August 2012 to spearhead development of new generations of both x86-64 and ARM microarchitectures, notably driving innovation with the Zen and K12 projects. These developments were pivotal in restoring AMD's competitiveness against rival Intel in high-performance CPU segments. He exited AMD in September 2015.
In January 2016, Keller joined Tesla, Inc. as Vice President of Autopilot Hardware Engineering. He advanced to Senior Vice President at Intel in April 2018 but resigned in June 2020 due to personal reasons amid reports of strategic disagreements regarding production outsourcing.
In December 2020, Keller became CTO of AI chip startup Tenstorrent, later assuming the role of CEO in January 2023.
In 2023, he co-established Atomic Semi alongside Sam Zeloof, focusing on the design and production of affordable small-scale semiconductor fabrication tools.
Personal life
Born in New Jersey as one of six siblings, Jim Keller was raised by a father employed as a mechanical engineer at General Electric Aerospace and a mother who pursued a career as a therapist.
His spouse, Bonnie, is related to Canadian author and clinical psychologist Jordan Peterson, being his sister.