SUPERMICRO SYS-6015B-T+B 1U Rackmount Server Barebone Dual LGA 771 Intel 5000P DDRII 667/533 CPU Type: Supports up to two Intel 64-bit Xeon processor(s) of the same type below: Quad-Core Intel Xeon Processor 5400/5300 sequence (Harpertown/Clovertown processor) up to 3.16 GHz Dual-Core Intel Xeon Processor 5200/5100/5000 sequence (Wolfdale/Woodcrest/Dempsey processor) up to 3.40 GHz FSB: 1333/1066/667 MHz South Bridge: MCH + PXH + ESB2 Memory Slots: 16 x 240Pin Max Memory Supported: 64GB ECC Supported: Yes ATA: Single EIDE channel supports up to two UDMA IDE devices (IDE-M, IDE-S) Serial ATA: 4 x SATA 300