Connectx-6 Single-Slot Socket Direct Cards (2X Pcie X8 In A Row) - Nvidia MCX651105A-EDAT User Manual

Part Number
RoHS RoHS Compliant
Adapter IC Part Number MT28908A0-XCCF-HVM

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
for Single-Slot Socket Direct Card for pinout definitions.
MCX654105A-HCAT MCX654106A-HCAT MCX654106A-ECAT
PCI Express Pinouts Description
19