Semiconductor startup Calxeda, backed by UK-based microprocessor company Arm Holdings, has raised $55m in funding led by existing investors Battery Ventures, a venture capital firm which typically invest in technology-driven companies, Flybridge Capital Partners, an early-stage venture capital firm and Advance Technology Investment company.
New investors include venture firm Austin Ventures and private investment firm Vulcan Capital also took part. The company has also previously been backed by Highland Capital Partners and Vulcan Capital. News provider TechCrunch added the company has also previously been backed by Texas Instruments.
Earlier this year the company also raised $20m of a planned $30m fundraising, according to a filing with US regulator Securities and Exchange Commission, as well as $750,000 of a planned $2m round, another filing said. In 2010 the company also raised $16.7m, according to another filing.
The investment is for ARM-based, low powered server chips which are found in smart-phones and tablets. This latest investment bring the total raised by the US-based company to over $100m.
Calxeda, which was founded as Smooth-stone Inc in 2008, is also developing energy-efficient processors for large data centers. It employs more than 100 workers and operates offices in the U.S and Silicon Valley. As Smooth-Stones the company raised $48m in a series A round in 2010 from a consortium of strategic and venture capital investors.