Sun Ultra 45

Up to two 1.6-GHz UltraSPARC IIIi processors, each with 1 MB of Level 2 cache
Up to 16 GB of DDR memory DDR1-333 ECC in 512 MB, 1 GB and 2 GB capacities
Five I/O expansion slots - two PCI Express x16 slots (x8 logically), one PCI Express slot (x4 logically) and two PCI-X 100 MHZ slots
Up to four 250 GB SATA hard drive, up to four 146 GB SAS hard drives