Supermicro's 1U Pentium D servers support the latest dual-core architecture that delivers unmatched multi-tasking capabilities in a uni-processor environment. Designed to get the most performance features for the buck, they support two PCI-X or express expansion slots, up to 8GB of DDRII memory, 4 SATA/SCSI HDDs, optional redundant power supply, and the list goes on. These servers are best used in high-availability cluster systems or databases.