ConnectX-6 Single-slot Socket Direct Cards (2x PCIe x8 in a row)
The PCIe x16 interface comprises two PCIe x8 in a row, such that each of the PCIe x8 lanes can be
connected to a dedicated CPU in a dual-socket server. In such a configuration, Socket Direct brings
lower latency and lower CPU utilization as the direct connection from each CPU to the network
means the interconnect can bypass a QPI (UPI) and the other CPU, optimizing performance and
improving latency. CPU utilization is improved as each CPU handles only its own traffic and not
traffic from the other CPU.
A system with a custom PCI Express x16 slot that includes special signals is required for installing the
card. Please refer to PCI Express Pinouts Description for Single-Slot Socket Direct Cardfor pinout
definitions.
Part Number MCX653105A-EFAT MCX653106A-EFAT
Form Factor/Dimensions PCIe Half Height, Half Length / 167.65mm x 68.90mm
Data Transmission Rate Ethernet: 10/25/40/50/100 Gb/s
InfiniBand: SDR, DDR, QDR, FDR, EDR, HDR100
Network Connector Type Single-port QSFP56 Dual-port QSFP56
PCIe x16 through Edge Connector PCIe Gen 3.0 / 4.0 SERDES @ 8.0GT/s / 16.0GT/s Socket Direct 2x8 in a
row
RoHS RoHS Compliant
Adapter IC Part Number MT28908A0-XCCF-HVM
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