AMD EPYC 7742
The AMD EPYC 7742 is a 64-core server processor from the second EPYC generation (7002 series, codename “Rome”), built on the Zen 2 architecture in a 7 nm process. It supports 128 threads, a 2.25 GHz base clock with boost up to 3.4 GHz, and 256 MB of L3 cache at a 225 W TDP.
The chip uses the SP3 socket (single- and dual-socket configurations), exposes 128 PCIe 4.0 lanes and an 8-channel DDR4-3200 memory controller delivering up to 204.8 GB/s per socket. It launched on 7 August 2019.
In AI workloads, CPUs of this class act as host processors for GPU accelerators, handling data preprocessing and CPU-side inference in data-center servers. The large number of PCIe 4.0 lanes makes it easier to attach multiple GPUs and fast NVMe storage.
Classification
Server CPU · serves as: Compute, AI Inference.
Which group AMD EPYC 7742 belongs to and how it is built
This subcategory covers server- and data-center-class central processing units (CPUs). In AI and robotics contexts they act as the host processor managing the operating system, task orchestration and data feeding to GPU accelerators. They commonly feature high-bandwidth multi-channel memory subsystems and coherent interconnects to GPUs.
A component type covering server-class central processing units — both x86- and Arm-based. They feature high core counts, extensive memory subsystems and coherent interfaces to accelerators, serving as the host processor in AI compute platforms.
Technical specification
How much power AMD EPYC 7742 needs and how it can be powered