Headquarters: Fremont, Calif.
Snapshot: SGI servers are specifically designed for high-performance computing jobs for high-end technical and enterprise computing. It also sells servers for data storage, computing servers and infrastructure software along with big data analytics services.
The company was founded in 2009 when Rackable Systems bought the assets of Silicon Graphics. SGI has approximately 1,500 employees worldwide. It's ranked No. 11 by IDC when it comes to server market share for units shipped in 2012.