IBM x3100 M4, System x. Processor clock speed: 3100 MHz, Processor family: Intel Xeon, Processor model: E3-1220V2. Total storage capacity: 500 GB, Hard drive capacity: 500 GB, Hard drive interface: Serial ATA. Internal memory: 4096 MB, Internal memory type: DDR3, Maximum internal memory: 32 GB. Networking features: Gigabit Ethernet, Cabling technology: 10/100/1000Base-T(X). PCI Express slots version: 2.0