Montalvo Systems

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Montalvo Systems was a Silicon Valley start-up reportedly working on an asymmetrical, x86 capable processor similar to the Cell microprocessor. The processor was to use high-performance cores for performance-intensive threads, and delegate minor tasks to the simpler cores to save silicon and power.[1] Matt Perry, former Transmeta CEO, served as CEO and president of Montalvo; Peter Song, founder of failed x86 manufacturer MemoryLogix, served as chief architect. Greg Favor (former NexGen/AMD) was responsible for chip microarchitecture and Carlos Puchol (former architect for power management at Transmeta and Nvidia) was system and power architect. Another founding member, Kevin Lawton, of bochs (x86 emulation) and plex86 (x86 virtualization) fame, was the processor simulator architect.

The official description of business from Montalvo's security filings[2] was:

A fabless semiconductor company developing ultra low-power system-on-chips for mobile devices.

As of 24 April 2008, Sun Microsystems had acquired the company's assets for an undisclosed sum.[3]


Headquarters were in Santa Clara, California, next door to the remnants of Transmeta, and nearby to Intel and Sun. It had offices in Boulder, Colorado and Bangalore, India. According to news reports, it had close to 300 employees.

In March 2008 news broke that Montalvo was seeking funds to avoid shutdown.[4] According to a news article released on March 31, Montalvo had laid off two-thirds of its engineers. At the same time, rumors surfaced that Sun Microsystems was in talks to buy Montalvo.[5] About three weeks later, on the 24th April 2008, The Register confirmed the rumors to be true.[3]


From the Cal-EASI database,[2] the following info is available about Montalvo's financing.

Date Type Amount Notes
2005-05-03 Series A $1,997,751.36 non-money, assumption of previous company's financing?
2005-05-03 Series A $4,548,247.70
2005-10-11 Warrants $302,000.00
2005-10-24 Series A $9,548,247.70
2006-03-10 Series B $26,299,998.53
2007-08-29 Bridge $11,607,573.06 subordinated convertible promissory notes
2007-12-17 Bridge $20,000,000.00 subordinated convertible promissory notes / warrants