Mellanox Socket Direct® Adapters

For Maximized Data Center Performance & Higher ROI

By providing direct PCIe access to dual CPU sockets, innovative Mellanox Socket Direct® Network Adapters eliminate the need for network traffic to go over the inter-process bus, thus optimizing overall system performance.




With Socket Direct - Eliminate Traffic Bottlenecks

With its unique form-factor, the Socket Direct network adapter is comprised of two PCIe cards and a harness, wherein the PCIe lanes are split between the two cards. The Socket Direct adapters enable both CPUs within a dual-socket server to connect directly to the network, each through its own dedicated PCIe interface. The result is extremely low latency and CPU utilization in addition to higher network throughput. Socket Direct also maximizes Artificial Intelligence and Machine Learning application performance, as it enables native GPU-Direct Technologies.

Flexible Data Speed Options

  • ConnectX-6 Socket Direct cards enabling HDR 200Gb/s and 200GbE ports over two PCIe Gen3 x16 slots.
  • ConnectX-5 Socket Direct cards providing EDR 100Gb/s and 100GbE transmission rate over two PCIe Gen3 x8 slots.

Best Performance – and Easy to Manage

The Mellanox Socket Direct PCIe stand-up adapter can be connected to a BMC using MCTP over SMBus, or MCTP over PCIe, similar to a standard Mellanox PCIe stand-up adapter. The adapter also can be configured transparently per the server’s specific manageability solution.

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Ordering Part No. Max. Speed Ports Connectors ASIC & PCI Dev ID PCI Lanes
Mellanox ConnectX®-6 VPI
MCX653105A-EFAT HDR100, EDR IB (100Gb/s) and 100GbE 1 QSFP56 ConnectX®-6 Socket Direct 3/4 x16, split into two x8 2x8 in a row
MCX653106A-EFAT HDR100, EDR IB (100Gb/s) and 100GbE 2 QSFP56 ConnectX®-6 Socket Direct 3/4 x16, split into two x8 2x8 in a row
MCX654106A-ECAT HDR100, EDR IB (100Gb/s) and 100GbE 2 QSFP56 ConnectX®-6 Socket Direct PCIe3 x16 + PCIe3x16 auxiliary card 2x16
MCX654105A-HCAT HDR IB (200Gb/s) and 200GbE 1 QSFP56 ConnectX®-6 Socket Direct PCIe3 x16 + PCIe3x16 auxiliary card 2x16
MCX654106A-HCAT HDR IB (200Gb/s) and 200GbE 2 QSFP56 ConnectX®-6 Socket Direct PCIe3 x16 + PCIe3x16 auxiliary card 2x16
Mellanox ConnectX®-5 VPI
MCX556M-ECAT-S25 EDR IB (100Gb/s) and 100GbE 2 QSFP28 ConnectX®-5 Socket Direct PCIe3 x8 + PCIe3x8 auxiliary card, 25cm harness 2 x8
MCX556M-ECAT-S35A EDR IB (100Gb/s) and 100GbE 2 QSFP28 ConnectX®-5 Socket Direct PCIe3 x8 + PCIe3x8 auxiliary card, 35cm harness 2 x8
*For Socket Direct Ethernet virtualization or Socket Direct dual-port use cases please contact Mellanox Customer support


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