Lenovo 4XG7A63602 SR665 Epyc 7543P

Lenovo 4XG7A63602 AMD EPYC 7543P 32-Core Processor Option Kit

The Lenovo 4XG7A63602 is an AMD EPYC 7543P processor option kit designed for the ThinkSystem SR665 server platform. Deploying this kit adds a 32-core, 64-thread EPYC 7543P running at 2.8 GHz base with a 3.7 GHz boost — a Milan-generation processor built for memory-intensive workloads where per-socket core density and memory bandwidth determine throughput. If you're provisioning a single-socket SR665 for video analytics, AI inference at the edge, or high-channel NVR back-end processing, the EPYC 7543P's architecture covers the compute and bandwidth requirements most deployments actually hit.

Key Features

• 32 Cores / 64 Threads: At 2.8 GHz base and 3.7 GHz boost, the EPYC 7543P handles deep parallel workloads — think simultaneous transcoding across dozens of video streams, or running multiple AI inference pipelines without CPU contention. For security integrators deploying GPU-assisted analytics, the host CPU no longer becomes the bottleneck at this core count.
• 256 MB L3 Cache: The 256 MB of L3 cache is one of the defining characteristics of the Milan generation. Large working sets stay on-die — reducing main-memory round trips for latency-sensitive operations like real-time object detection or database lookups in access-control systems.
• 204.8 GB/s Memory Bandwidth: Octa-channel DDR4 delivers up to 204.8 GB/s of aggregate memory bandwidth. That figure matters directly when the server is ingesting high-frame-rate, high-resolution video feeds: frame buffers move faster than the storage or network can bottleneck them, keeping pipeline stages fed.
• Octa-Channel DDR4 Memory Controller: Eight independent DDR4 channels mean you can populate the SR665's DIMM slots symmetrically for maximum bandwidth — important when spec'ing out a server that will run both analytics workloads and act as a recording buffer simultaneously.
• 3.7 GHz Boost Frequency: Single-threaded burst performance matters for control-plane tasks: UI responsiveness in VMS software, license-plate lookup queries, and alarm-triggered event processing all benefit from the headroom above base clock. The 2.8-to-3.7 GHz range is wide enough that lightly-threaded tasks aren't penalized.
• Socket SP3 Platform: The SP3 socket is AMD's server-grade LGA platform for the EPYC family — mechanically robust and thermally designed for sustained datacenter loads. The 4XG7A63602 slots directly into the SR665's primary CPU socket with no riser or adapter required.
• 225 W TDP (Configurable to 240 W): The 225 W TDP is the baseline thermal envelope. The SR665's cooling system is validated for this draw, but plan your rack PDU and UPS budget accordingly — a dual-socket build (if later upgraded) will require a full reassessment of power allocation. The configurable TDP-up of 240 W gives headroom for sustained boost under heavy load.
• 64-Bit Operating Mode: Full 64-bit execution with support for large physical address spaces — necessary for VMS platforms that address multi-terabyte in-memory video indexes or large analytics model weights without memory segmentation constraints.

Integration and Compatibility

The 4XG7A63602 is a factory option kit for the Lenovo ThinkSystem SR665 server. It installs into the SP3 processor socket and requires the SR665's validated heatsink assembly — note that no cooler is included with this kit, so the appropriate heatsink must be ordered separately before commissioning. Confirm heatsink part number compatibility with the SR665 configuration guide before placing the order.

The EPYC 7543P's octa-channel DDR4 memory controller is compatible with standard DDR4 RDIMM and LRDIMM modules. For deployments running network video recorders or GPU-accelerated analytics servers, pair this processor with ECC-registered DDR4 DIMMs to maximize both bandwidth utilization and memory reliability under continuous 24/7 operation.

On the software side, the 32-core EPYC 7543P is supported by all major Linux distributions (RHEL, Ubuntu Server, SLES) and Windows Server 2019/2022. VMware vSphere and Hyper-V virtualization are both validated on the SR665 platform, making it viable for consolidated deployments running VMS, analytics, and access-control management on a single host. For integrators evaluating rack server options for enterprise security infrastructure, this processor option is a meaningful upgrade path over lower-core-count EPYC variants in the same SP3 lineup.

Power delivery planning is straightforward: the 225 W TDP fits within standard 800–1600 W server PSU configurations. For UPS and power infrastructure sizing, budget the full configurable TDP-up of 240 W per socket under sustained compute load to avoid undersizing the power chain.

Frequently Asked Questions

Q: Is the 4XG7A63602 compatible with the Lenovo ThinkSystem SR665?

A: Yes. The 4XG7A63602 is a factory option kit specifically validated for the ThinkSystem SR665. It installs into the primary SP3 processor socket on that platform.

Q: Does the 4XG7A63602 include a heatsink or cooler?

A: No. The processor kit does not include a heatsink. A compatible SR665 heatsink assembly must be ordered and installed separately before the server can be operated.

Q: What memory type does the EPYC 7543P support?

A: The EPYC 7543P supports DDR4-SDRAM via an octa-channel memory controller, delivering up to 204.8 GB/s of aggregate memory bandwidth. ECC-registered DDR4 DIMMs are recommended for 24/7 server workloads.

Q: What is the thermal design power of the 4XG7A63602?

A: The base TDP is 225 W. The configurable TDP-up is 240 W for sustained high-performance workloads. Plan PSU and cooling capacity accordingly.

Q: How many cores and threads does this processor provide?

A: The AMD EPYC 7543P delivers 32 physical cores and 64 threads via simultaneous multithreading, running at 2.8 GHz base and up to 3.7 GHz boost.

Q: Is this a single-socket or dual-socket processor?

A: The EPYC 7543P is a single-socket (