News Sun bumps UltraSparc to 1.8GHz By - August 23, 2006 6 FacebookTwitterPinterestWhatsAppLinkedinReddItEmail Sun Microsystems increased the top speed of its UltraSparc IV+ processor from 1.5GHz to 1.8GHz last week, a move the company said improves the overall performance of servers with the chip about 20 percent. Link: news.com