The SPARC family of microprocessors is a very good implementation of the RISC design and SPARC based computing devices cover a very wide spectrum of applications, from mainframe class computers to radhard microprocessors used by the aerospace industry in its space segment. SPARC based computers are usually very well engineered products, thus Linux on SPARC is a winning combination both in performance and ease of use. Actually this combination is not as widspread as the Linux/x86; this HOWTO should help you step by step to make an informed decision: try it you will not regret it.