Sockel: INTEL Dual XEON - Sockel LGA771 - Dual Dempsey/Woodcrest up to 3.73GHz (Dual/Quad Core) - Dual-Core Intel® Xeon® Processor 5000/5100 sequence Chipset: IIntel® 5000P Chipset, Intel® 6321ESB I/O Controller Hub, Intel® 6702PXH 64-bit PCI Hub Form Factor: SSI CEB 1.1 Compliant, 12" x 10.5" Busclock MHz FSB: 667/1066/1333MHz Total Slots: 7 1x PCI-X 133/100 MHz 1x PCI-X 133/100 MHz 1x PCI-X 133/100 MHz 1x PCI 32bit/33 MHz 1x PCI-E x 8 (x 4 link) 1x PCI-E x 16 (x 8 link) Additional Slot 1: 1 * SODIMM socket for ASMB3-SOL Speicher: 0xSD-RAM * 6x DDR2 ECC Reg 4 Channel 533/667FBD DIMMs * 0xRAMBUS / Memory standard max.: 16GB (B3 Stepping) or 24GB (G1 Stepping) Features: VGA-ja (ATI ES1000 PCI / 32MB * Audio-n * ATA-100-1x * S-ATA2-2x * Raid-ja (SATA) * GLAN-ja * IEEE1394-n * USB-2.0 - 4x