Lenovo 4XG7A72944 ST650 V2 Gold 5318Y 24C 165W 2.1GHZ

Lenovo 4XG7A72944 Intel Xeon Gold 5318Y 24-Core Processor Option for ThinkSystem ST650 V2

Overview

The Lenovo 4XG7A72944 is an Intel Xeon Gold 5318Y 24-core processor option kit designed for the ThinkSystem ST650 V2 tower server. Built on Intel's 3rd Generation Xeon Scalable platform and fabricated at 10nm, the 5318Y delivers 48 threads of compute headroom at a 2.1 GHz base clock — giving workload-intensive environments like video analytics platforms, on-premises VMS servers, and enterprise surveillance infrastructure the parallel processing depth they need without overprovisioning core count. If your ST650 V2 is running multi-stream AI inference or simultaneous recording and analytics workloads, this processor tier hits a practical sweet spot between core density and per-core frequency.

Key Features

• 24 Cores / 48 Threads via Hyper-Threading: The 5318Y's 48 logical processors allow the OS scheduler to pack concurrent workloads — simultaneous RTSP decoding, analytics inference, and database I/O — without the serialization bottlenecks that plague lower-core-count Xeon tiers. For a VMS host running 64+ camera streams with motion analytics enabled, thread saturation is the first bottleneck you hit; 48 threads gives meaningful runway.
• 2.1 GHz Base / 3.4 GHz Boost: The 1.3 GHz headroom between base and boost means lightly-threaded tasks — individual stream decoding, alert processing, API calls — get the higher single-thread performance of the boost clock automatically. On workloads where all 24 cores are loaded (full-channel NVR scenarios), you'll run closer to the 2.1 GHz floor, which is worth planning for in your thermal and power budget.
• Heterogeneous Core Architecture — 8 High-Priority Cores at 2.3 GHz: The 5318Y segments its 24 cores into 8 high-priority cores running at 2.3 GHz and 16 efficiency cores at 1.8 GHz. The OS and hypervisor can pin latency-sensitive processes — license plate recognition, real-time alert generation — to the high-priority cluster while offloading bulk stream ingestion to the lower-frequency cores. This is a meaningful advantage over flat-frequency designs when running mixed-criticality workloads.
• 36 MB Last-Level Cache: 1.5 MB of L3 per core is a solid ratio for data-intensive workloads. In video analytics pipelines, larger cache reduces the frequency of main-memory fetches during frame buffer operations, which translates to lower latency on per-frame inference tasks — particularly relevant for edge-deployed deep learning models that iterate over the same frame data multiple times.
• 11.2 GT/s System Bus: The high-speed interconnect keeps memory bandwidth from becoming the bottleneck when all 24 cores are actively reading from or writing to DRAM. For a server feeding live video to multiple analytics threads simultaneously, bus saturation is a real constraint — the 11.2 GT/s rate accommodates the bandwidth demands of sustained multi-stream workloads.
• 165W TDP: At 165W, this processor sits in the mid-high range of the Xeon Gold 5000 series power envelope. Verify that your ST650 V2 chassis is configured with adequate PSU capacity and that airflow/cooling is sized for the full thermal design load — especially important in rack-adjacent tower deployments where ambient temperatures run higher than a controlled data center environment.
• 10nm Lithography — 3rd Generation Xeon Scalable (Ice Lake-SP): The 10nm process node delivers improved instructions-per-clock efficiency versus prior-generation 14nm Xeon Scalable parts. For long-running server workloads running 24/7 — as surveillance infrastructure almost always does — the efficiency gains translate to lower cumulative power draw and less thermal stress on the system over multi-year deployment cycles.
• LGA 4189 Socket / 64-Bit Operation: The 4189 socket supports the full memory addressing capability of the Ice Lake-SP platform, including large-capacity DRAM configurations needed when hosting in-memory video indexing or analytics model caches. 64-bit operation is a baseline requirement for any modern server OS and hypervisor stack.

Integration and Compatibility

The 4XG7A72944 is a factory Lenovo option kit validated for the ThinkSystem ST650 V2 platform. Processor options for enterprise servers are platform-specific — the LGA 4189 socket and associated firmware compatibility are tied to the ST650 V2's board design and UEFI version. Before deploying, confirm the ST650 V2's UEFI firmware is at a revision that supports 3rd Generation Xeon Scalable processors; some early ST650 V2 boards shipped with firmware targeting 2nd-gen Xeon Scalable and require an update before the 5318Y is recognized correctly.

For organizations building out network video recorders or on-premises security camera infrastructure backed by a capable compute platform, the ST650 V2 with a 5318Y is a practical foundation for running multi-channel VMS software alongside GPU-accelerated analytics cards. The Xeon Gold platform also supports ECC memory, which matters for any always-on recording server where memory errors can corrupt stored footage or crash the recording process mid-stream. Pair with appropriate network switches to ensure sufficient bandwidth for the camera-to-server data path. For integrators evaluating the broader server and compute options in this platform family, compare core count and TDP against the specific channel count and analytics load your VMS deployment demands — over-specifying on cores at the cost of per-core frequency can hurt latency-sensitive workloads.

Frequently Asked Questions

Q: What server is the Lenovo 4XG7A72944 compatible with?

A: The 4XG7A72944 is a processor option kit validated for the Lenovo ThinkSystem ST650 V2 tower server. It uses the LGA 4189 socket specific to the 3rd Generation Intel Xeon Scalable (Ice Lake-SP) platform.

Q: What are the core and thread counts of the Xeon Gold 5318Y in this kit?

A: The Intel Xeon Gold 5318Y provides 24 physical cores and 48 logical threads via Intel Hyper-Threading. It operates at a 2.1 GHz base frequency with a boost up to 3.4 GHz, and carries a 36 MB last-level cache.

Q: What is the TDP of the 5318Y processor and how does that affect server configuration?

A: The 5318Y has a 165W TDP. Ensure your ST650 V2 is configured with a power supply and cooling solution rated to handle this thermal load, particularly in environments where the server runs continuously at or near full utilization.

Q: Does the 5318Y support ECC memory?

A: Intel Xeon Scalable processors including the Gold 5318Y support ECC (Error-Correcting Code) memory as part of the platform architecture. ECC memory support depends on the ST650 V2 system configuration and installed DIMMs — consult the ST650 V2 platform guide for validated memory options.

Q: Is the 4XG7A72944 compatible with virtualization workloads?

A: The Intel Xeon Gold 5318Y supports Intel Virtualization Technology (VT-x and VT-d) as part of the Ice Lake-SP platform, making it suitable for hypervisor deployments. The 48-thread configuration provides meaningful capacity for running multiple VMs — for example, separating VMS recording, analytics, and management workloads across isolated virtual machines.

Q: What is the processor generation and fabrication node for the 5318Y?

A: The 5318Y is a 3rd Generation Intel Xeon Scalable processor (Ice Lake-SP) fabricated on a 10nm process node. This generation improves instructions-per-clock efficiency compared to prior 14nm Xeon Scalable parts.