PERC 5/i is a PCI Express based serial attached SCSI RAID controller that provides enterprise class protection and performance for your Dell system. With support for RAID levels 0, 1, 5, 10, and 50, the PERC 5/i provides multiple protection options to suit a wide range of applications and non-critical data. It includes a powerful Intel IOP333 processor with XScale micro architecture and a 256 MB of DDR2 memory for read and write cache. PCI Express provides a high performance point-to-point link for interconnecting devices and transmitting data.