The NVIDIA/Mellanox MCP7Y00-NXXX Cable is an 800Gb/s twin-port OSFP to two 400Gb/s twin-port OSFP InfiniBand NDR Active Direct Attached Copper dual breakout cable. The 8-channel twin-port OSFP end uses a finned top form-factor for use in Quantum-2 and Spectrum-4 switch cages. The two 400G ends support 4-channels of 100G-PAM4 (400G) and use a flat top OSFP for use in ConnectX-7 adapters using riding heat sinks on the connector cage. This cable is compliant with OSFP MSA (Multi-Source Agreement) and IEEE 802.3ck standards.
ACCs offer the lowest latency, so are widely used in data centers to connect servers and GPU compute systems to the top-of-rack (TOR) switches and link spine-to-super-spine switches inside racks over short cable lengths. ACCs are also used to create InfiniBand storage fabrics with hard-disk-drive (HDD) and flash memory subsystems.
ACC cables are the second lowest-cost, low-latency, low-power consuming, high-speed links next to passive DACs due to their simplicity of design and minimal components. They enhance port bandwidth, density, configurability, and reduce power requirements in supercomputers and hyperscale systems.