Sun's UltraSPARC IV+ 64-bit processor is the fifth generation in the UltraSPARC processor family. It comes with significantly enhanced cores, 2 MB on-chip L2 cache, and an off-chip 32 MB L3 cache. The 1.95 GHz and 2.1 GHz processors follows Sun's Throughput Computing vision while continuing the tradition of binary code compatibility - and uses the latest 90 nanometer process technology.