2004-02-10 Sun UltraSparc IV 4-way superscalar processor built with a 130 nm process running at 1.2 to 2 GHz. Consists of 2 UltraSPARC III pipelines. Pin compatible with UltraSPARC III. Previously code named Jaguar and planned for 03-H2. Later made in a 90 nm version.
2006 Sun UltraSparc V Runs at more than 1.8 to above 3 GHz and is built using a 90 nm process. Five times faster than UltraSPARC III. Previously planned for 2005.