Lenovo 4XG7A72939 ST650 V2 Silver 4314 16C 135W 2.4GHZ

Lenovo 4XG7A72939 Intel Xeon Silver 4314 16-Core Processor for ThinkSystem ST650 V2

Overview

The Lenovo 4XG7A72939 is an Intel Xeon Silver 4314 processor option kit designed specifically for the ThinkSystem ST650 V2 tower server. It delivers 16 cores and 32 threads at a 2.4 GHz base clock with a 3.4 GHz Turbo Boost ceiling — a configuration that handles the parallel, moderately threaded workloads common in mid-market virtualization, video management software (VMS), and analytics server builds. If you are sizing a rack or tower server for a multi-channel surveillance back-end or a hybrid IT/physical security infrastructure, the 4XG7A72939 is a practical mid-tier processor choice in the Ice Lake Xeon generation.

Key Features

• 16 Cores / 32 Threads: At 2.4 GHz base, this processor can service simultaneous decode, analytics inference, and storage I/O threads without core contention — relevant when your VMS is running live decode plus server-side motion analytics concurrently across dozens of streams.
• 3.4 GHz Turbo Boost: Single-threaded burst headroom of 3.4 GHz means latency-sensitive operations — alarm event processing, database queries, UI responsiveness in server-hosted VMS — get the clock speed they need without requiring a higher-tier SKU.
• 24 MB L3 Cache: The 24 MB cache sits between the processor cores and main memory, reducing average latency for frequently accessed data structures. For a VMS host managing large in-memory frame buffers or motion detection maps, this cache depth reduces the frequency of main-memory fetches that would otherwise introduce pipeline stalls.
• 135 W TDP: At 135 W thermal design power, the 4314 sits in the mid-range of the Ice Lake Xeon Silver lineup. Plan your ST650 V2 chassis cooling and power delivery accordingly — a 135 W processor requires active cooling that the ST650 V2 provides natively, but note that no cooler is included in the 4XG7A72939 kit; confirm the chassis ships with the appropriate heatsink for a 135 W load.
• 10 nm Ice Lake Architecture (3rd Gen Xeon Scalable): The Ice Lake microarchitecture generation delivers improved per-core IPC over the prior Cascade Lake generation and introduces PCIe 4.0 support — doubling storage and GPU interconnect bandwidth compared to PCIe 3.0 platforms. For GPU-accelerated analytics or NVMe storage arrays, this lane bandwidth matters.
• LGA 4189 Socket / 10.4 GT/s System Bus: The LGA 4189 platform supports up to 8 channels of DDR4 memory and the 10.4 GT/s UPI interconnect for dual-socket configurations. If your deployment scales to require a second processor in the ST650 V2, the platform supports it without a motherboard swap.
• 64-bit Operating Mode: Full 64-bit instruction support means no ceiling on addressable RAM — essential on a server expected to run a hypervisor with multiple guest VMs or a VMS instance managing high-resolution multi-camera streams where in-memory working sets exceed 4 GB.
• 32 Threads via Hyper-Threading: Hyper-Threading allows the OS scheduler to see 32 logical processors across 16 physical cores. Under mixed workloads — where some threads are I/O-bound and others are compute-bound — Hyper-Threading improves overall CPU utilization without adding physical core count or TDP.

Integration & Compatibility

The 4XG7A72939 is a factory-configured server processor option for the Lenovo ThinkSystem ST650 V2 platform. It installs into the LGA 4189 socket and is validated against Lenovo's firmware and BIOS ecosystem for that chassis — using a non-validated processor in a ThinkSystem server can trigger hardware compatibility warnings or restrict certain BIOS features. Always cross-reference against Lenovo's ServerProven compatibility database for the ST650 V2 before ordering if you are unsure of socket population rules for your specific chassis configuration.

From a software perspective, the 16-core / 32-thread profile integrates cleanly with enterprise hypervisors (VMware vSphere, Microsoft Hyper-V, KVM), Linux-based VMS platforms, and Windows Server environments. The processor's 64-bit mode and Hyper-Threading support are prerequisites for most enterprise hypervisor licensing tiers. For NVR and VMS server builds, pair this processor with sufficient DDR4 ECC memory and surveillance-grade storage to avoid creating bottlenecks at those subsystems rather than at the CPU.

Weighing 2.00 lb and packaged at 6.00 × 8.00 × 5.00 in, the 4XG7A72939 ships in retail box packaging — appropriate for individual unit procurement or small-quantity server builds. The processor is suitable for organizations deploying the ST650 V2 as a tower server in a wiring closet, security operations center, or equipment room where a rack-mount chassis is not required.

Frequently Asked Questions

Q: Is the 4XG7A72939 compatible with servers other than the ThinkSystem ST650 V2?

A: The 4XG7A72939 is a Lenovo-branded option kit validated for the ThinkSystem ST650 V2. While the Intel Xeon Silver 4314 uses the standard LGA 4189 socket found across several Ice Lake Xeon platforms, Lenovo option kits are firmware-validated for specific ThinkSystem models. Using this kit in a non-validated chassis may trigger compatibility warnings. Confirm compatibility against Lenovo's ServerProven list for any other platform.

Q: Does the 4XG7A72939 include a heatsink or cooler?

A: No. The 4XG7A72939 does not include a cooler. The ThinkSystem ST650 V2 chassis provides its own cooling solution, but you must confirm that your specific chassis configuration includes the appropriate heatsink rated for a 135 W TDP processor before installation.

Q: What is the Turbo Boost frequency of the Xeon Silver 4314 in this kit?

A: The Intel Xeon Silver 4314 (as included in the 4XG7A72939) has a base frequency of 2.4 GHz and a maximum Turbo Boost frequency of 3.4 GHz. The boost frequency applies to single-core or lightly loaded scenarios where thermal and power headroom permit.

Q: How many cores and threads does the 4XG7A72939 provide?

A: The Xeon Silver 4314 delivers 16 physical cores and 32 threads via Intel Hyper-Threading. This configuration supports parallel workloads common in virtualization, video management software, and analytics server applications.

Q: What memory platform does the LGA 4189 socket support?

A: The LGA 4189 platform supports multi-channel DDR4 ECC memory and a 10.4 GT/s UPI system bus interconnect. The platform also supports dual-socket configurations in servers designed for it, such as the ST650 V2, allowing a second processor to be added for additional core count without a chassis change.

Q: What is the TDP of the 4XG7A72939 and why does it matter for server deployment?

A: The Xeon Silver 4314 has a 135 W Thermal Design Power. This determines the cooling capacity required from the server chassis and the power draw allocated per processor socket. When planning power distribution for a server rack or equipment room, budget at least 135 W per socket from your PDU and UPS capacity calculations, in addition to memory, storage, and platform overhead.

Karl Wilson

When I spec server processors for VMS back-ends, I look hard at core count per watt and per-core burst headroom — and the 4XG7A72939 hits a reasonable balance on both for mid-scale deployments. The Xeon Silver 4314's 135 W TDP against 16 cores gives you roughly 8.4 W per core at full load, which is manageable in a tower chassis like the ST650 V2 without exotic cooling. The 3.4 GHz boost headroom means alarm-driven event processing and UI threads won't bottleneck even when the background decode workload is saturating most cores.

Technical Highlights:

• 32 Threads at 2.4 GHz Base: Enough parallelism to run a hypervisor host with multiple VMS guest VMs and still have logical cores available for storage I/O threads — important when the server is doing double duty as both recorder and analytics engine.
• 24 MB L3 Cache: Larger cache than many Silver-tier predecessors, which keeps frequently accessed decode buffers and analytics model data closer to the cores — reducing memory latency on sustained multi-stream workloads.
• PCIe 4.0 via Ice Lake Platform: The 3rd Gen Xeon Scalable platform doubles interconnect bandwidth over PCIe 3.0. If you add an NVMe storage array or a GPU inference accelerator to this server later, the lane bandwidth is already there — no platform upgrade needed.

Deployment Considerations:

• No cooler ships with the 4XG7A72939 — verify your ST650 V2 chassis is configured with a heatsink rated for 135 W before scheduling installation. A missing or undersized heatsink at commissioning is a common delay point on server builds.
• Lenovo option kits like the 4XG7A72939 are firmware-validated for specific ThinkSystem platforms. Installing this processor in a non-validated chassis risks BIOS compatibility flags that can restrict performance states or trigger service alerts — always confirm the ServerProven entry for your exact chassis revision.

The 4XG7A72939 is well-suited for a physical security operations center server build where the ST650 V2 will host a VMS instance, edge analytics processing, and access control integration simultaneously — a workload profile that benefits from 32 threads and cache depth more than from raw single-core frequency.