Calxeda, which makes energy-saving chips for servers that power data centers, has raised $20 million of a $30 million offering, according to a statement filed with the Securities and Exchange Commission.
The Austin-based company, founded in 2008 as Smooth Stone, announced $48 million in funding in November of 2010.
Calxeda’s funders include Advanced Technology Investment Co., ARM, Battery Ventures, Flybridge Capital Partners and Highland Capital Partners.
For more on the company, read the profile Susan Lahey wrote last year.