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Intel® 82576 GbE Controller: Product BriefHigh-performance, Dual-Port Gigabit Network Connectivity for multi-core and virtualized platformsThe Intelligent Way to ConnectThe Intel® 82576 Gigabit Ethernet Controller is a compact component with two fully integrated Gigabit Ethernet Media Access Control (MAC) and physical layer (PHY) ports. This device uses the PCI Express* 2.0 (2.5 GT/s) [x4, x2, and x1] interface. The Intel 82576 Gigabit Ethernet Controller provides two IEEE 802.3* Ethernet interfaces for 1000BASE-T, 100BASE-TX, and 10BASE-T applications. Both ports also integrate a Serializer- Deserializer (SerDes) interface to support 1000BASE-SX/LX/BX (optical fiber), Gigabit Ethernet backplane applications and external PHYs connected either on board or via SFP connectors using SGMII signaling. Intel 82576 Gigabit Ethernet Controller provides hardware assists for auto sensing and switching between Copper and SerDes/SGMII interfaces.High-Performance Design FeaturesThe Intel 82576 Gigabit Ethernet Controller provides high-performance dual-port gigabit connectivity in a multi-core platform as well as in a virtualized platform. In a multi-core platform it supports different technologies including Intel® QuickData Technology, MSI-X, Low Latency Interrupts and others, that help accelerate the data across the platform thereby improving application response times. In a virtualized environment it supports Intel® Virtualization Technology for Connectivity that helps improve the I/O performance by reducing the I/O overhead on a virtualized platform.The I/O technologies on a multi-core platform make use of the multiple queues and multiple interrupt vectors available on the Controller. These queues and interrupt vectors help in load balancing the data and the interrupts amongst themselves in order to lower CPU utilization and improve the overall system performance. Depending upon the latency sensitivity of the data, the Low Latency Interrupts feature automatically modulates the time interval between the interrupts, lowering CPU utilization levels.Read the full Intel® 82576 GbE Controller Product Brief.
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