Superior performance/U in a 4-socket, 2U serverPlease see the Legal Information section for important notices and information. 2DirectConnect Architecture and 12MB of integrated Level 3 cache per processor offer solidperformance capable of tackling the toughest jobs.• Each processor includes 4 integrated memory controllers (one per memory channel), for upto 16 memory controllers per server.• Energy-efficient processors use less power and produce lest waste heat than less efficientprocessors, thus helping to reduce data center energy costs. For example, the 12-core 115W(maximum) processors average only 80W in typical use, which is under 7W per core.• All x3755 M3 servers support 2 DIMMs per channel (2DPC) at 1333MHz (using 1.5V DIMMs).• Fast PC3-10600 DDR3 ECC memory with Chipkill error correction and online memorysparing protection provides speed and high availability.• Four high-speed PCIe Gen 2 adapter slots offer investment protection by supporting high-performance adapters, such as 10Gb Ethernet and InfiniBand cards.• Integrated ServeRAID controllers support RAID-0/1/10 or RAID-0/1/10/5/50 standard (model-specific), upgradeable to RAID-0/1/10/5/50.• Up to eight 3.5-inch hot-swap SAS or SATA hard disk drives offer high-performance withhigh availability.• Two integrated dual-port Gigabit Ethernet controllers with IPMI 2.0 support provide 4 portsfor high-speed network communications.• Support for TCP Offload Engine (TOE) and RDMA offers higher performance for TCP/IPtraffic, with less overhead on the system processor.• A high degree of device integration—including quad Gigabit Ethernet, systemsmanagement and video controllers—lowers costs and frees up valuable adapter slots.FlexibilityThe x3755 M3 has the ability to grow with your application requirements, thanks to:• A choice of Opteron processors with 1.8 through 2.3GHz clock rates and 79-137W maximumpower draw.• Up to 256GB of high-speed DDR3 system memory (64GB per processor).• Three available high-performance adapter slots (one PCIe x16, one x8, one x4 in allmodels.• Hardware-based support for RAID-0/1/10 (upgradeable to RAID-5/50) is provided standard inmost models. Other models provide RAID-0/1/10/5/50 standard (upgradeable with RAID-6/60and battery backup).• The five USB 2.0 ports are up to 40X faster3 than older USB 1.1 ports. This provides speedyaccess to external HDDs (non-arrayed), optical drives, tape drives, and other USB devices.Two ports are on the front of the unit, one is internal, and two are on the back.• Up to eight internal 3.5-inch hot-swap SAS/SATA HDDs are supported internally (up to 16TBSATA or 4.8TB SAS).ManageabilityPowerful systems management features simplify local and remote management of the x3755 M3:• The x3755 M3 includes an integrated Baseboard Management Controller (iBMC) to monitorserver availability, perform Predictive Failure Analysis, etc., and trigger IBM Systems Directoralerts. The BMC enables service personnel to use sophisticated diagnostic tools, such as lightpath diagnostics and Serial over LAN, to resolve problems quickly. The remote presencefeature offers remote control of keyboard, video, and mouse, graphical console redirectionover LAN, remote virtual floppy and CD-ROM, plus the latest OS failure screen capture.• Integrated IPMI 2.0 support alerts IBM Systems Director to anomalous environmental factors,such as voltage and thermal conditions. It also supports highly secure remote powercontrol using data encryption.• Text Console Redirection support allows the administrator to remotely view x3755 M3 textmessages over Serial or LAN.• Integrated industry-standard Unified Extensible Firmware Interface (UEFI) next-generationBIOS. New capabilities include:– Human readable event logs — no more beep codes– Complete out-of-band coverage by the Advance Settings Utility to simplify remote setup– A complete setup solution, allowing adapter configuration functions to be moved into UEFI3 Data transfer rates may be less than the maximum possible.