SUPERMICRO SYS-5015B-NTRB 1U Rackmount Server Barebone LGA 775 Intel X48 DDR3 1333/1066/800 CPU Type: Supports Quad-Core Intel Xeon X3300/X3200 series Supports Dual-Core Intel Xeon E3100/3000 series Supports Intel Xeon processor L3360 and L3110 series Supports Intel Core2 Quad Q9000/Q8000/Q6000 series Supports Intel Core2 Duo E8000/E7000/E6000/E4000 series Supports Intel Pentium E5000/E2000 series Supports Intel Celeron E1000 and 400 series *NOTE: 1600MHz CPU has to use 1600 MHz XMP Memory FSB: 1600/1333/1066/800 MHz South Bridge: ICH9R Memory Slots: 4 x 240Pin Max Memory Supported: 8GB Channel Supported: Dual Channel ATA: One EIDE channel supports up to two UDMA IDE devices Serial ATA: 6 x SATA 300