Remanufactured Uniboard with: 4 * 1.5GHz UltraSPARC IV+ Processors with 2MB on-chip L2 cache and 32MB L3 cache each, 8 banks of 4GB memory options (32 * 1GB DIMMs / 32GB total for the board). (Standard Configuration) For use with the Sun Fire E4900, E6900