SUPERMICRO SYS-1025C-3B 1U Rackmount Server Barebone Dual LGA 771 Intel 5100 DDRII 667/533 CPU Type: Supports up to Dual 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 sequence (Wolfdale/Woodcrest processor) up to 3.40 GHz South Bridge: ICH9R Memory Slots: 6 x 240Pin Max Memory Supported: 48GB ECC Supported: Yes Registered: Yes ATA: Single EIDE channel supports up to two UDMA IDE devices(IDE-M, IDE-S) Serial ATA: 6 x SATA 300