Lenovo 4XG7A72938 ST650 V2 Gold 5320T 20C 150W 2.3GHZ

Lenovo 4XG7A72938 Intel Xeon Gold 5320T 20-Core Processor for ST650 V2

Overview

The Lenovo 4XG7A72938 is a factory-configured Intel Xeon Gold 5320T processor option for the ThinkSystem ST650 V2 tower server, delivering 20 physical cores at a 2.3 GHz base clock with a 150W thermal design profile. Built on Intel's third-generation Xeon Scalable architecture (Ice Lake, 10nm), it targets organizations that need sustained multi-threaded compute headroom in a tower form factor — think video management servers running parallel analytics streams, edge data centers with limited rack space, or enterprise workloads where a tower deployment is preferable to a rack unit. If you're specifying Lenovo server platforms for a surveillance or compute-intensive deployment, the 5320T's combination of core count and moderate TDP makes it a deliberate tradeoff worth understanding before you commit.

Key Features

• 20 Cores / 40 Threads at 2.3 GHz Base: With 20 physical cores and Intel Hyper-Threading enabled, this processor presents 40 logical cores to the OS. On a video management server running a demanding VMS like Milestone or Genetec, that thread count directly affects how many simultaneous decoding and analytics tasks can be dispatched without queuing — reducing latency on live view and playback operations across large camera counts.
• 3.5 GHz Boost Frequency: When workloads concentrate on fewer threads (single-stream transcoding, database queries, real-time alerting logic), the processor boosts up to 3.5 GHz. That 1.2 GHz headroom above base clock means latency-sensitive operations don't stall waiting for core availability.
• Tiered Core Architecture — 6 High-Priority + 14 Efficiency Cores: Intel's Application Optimization (APO) assigns 6 high-priority cores running at 2.6 GHz alongside 14 lower-priority cores at 2.1 GHz. Schedulers that are APO-aware can route foreground tasks (analytics inference, active stream decoding) to the high-priority cores while background I/O and housekeeping runs on the efficiency cores — a meaningful throughput improvement in mixed-workload server environments.
• 150W TDP — Thermal Planning Matters: At 150W, this is not a low-power option. The ST650 V2 is designed to handle it, but if your deployment environment has limited cooling headroom (wiring closet, kiosk enclosure, poorly ventilated server room), plan your thermal budget accordingly. A sustained full-load 150W draw adds real heat to the room and requires adequate airflow across the chassis.
• 10nm Intel Ice Lake Architecture: Third-generation Xeon Scalable processors on the 10nm node deliver improved instructions-per-clock over prior-generation Cascade Lake parts. For compute-bound workloads like deep learning inference at the edge or large-scale video analytics, the IPC gain translates to more useful work per clock cycle — not just a marketing revision.
• LGA 4189 Socket, 11.2 GT/s System Bus: The LGA 4189 platform supports high-bandwidth memory subsystems and PCIe 4.0 I/O, which matters when you're pairing this processor with NVMe storage arrays or high-throughput network cards for high-density switch uplinks. The 11.2 GT/s UPI interconnect rate keeps memory and I/O from becoming the bottleneck on the ST650 V2 platform.
• 64-Bit Operating Mode, 40-Thread Parallelism: Full 64-bit addressing means no memory ceiling constraints for large in-memory datasets — relevant for VMS databases indexing months of motion metadata, or analytics engines maintaining per-camera behavioral models in RAM.

Integration and Compatibility

The 4XG7A72938 is a Lenovo option kit designed specifically for the ThinkSystem ST650 V2 server platform. It is not a retail boxed processor — it is validated, configured, and supported as part of the Lenovo ST650 V2 bill of materials. Verify platform compatibility through the Lenovo ServerProven tool before ordering; pairing this option with an incompatible chassis or firmware revision can result in a non-POST condition. The LGA 4189 socket is exclusive to third-generation Xeon Scalable platforms — this part will not install in LGA 3647 (first/second-gen Xeon Scalable) systems. If you're building out a server infrastructure stack that includes multiple processor tiers, confirm memory speed and channel configuration with the ST650 V2 technical specification guide, as memory bandwidth is tuned to the installed processor TDP class.

For surveillance-focused deployments, this processor's 40-thread capacity handles simultaneous stream decoding, motion indexing, and analytics inference that would saturate lower-core-count options. Pair it with adequate DDR4 ECC memory and an NVMe or SAS storage subsystem to avoid memory or I/O bottlenecks undermining the CPU headroom.

Frequently Asked Questions

Q: Is the 4XG7A72938 compatible with servers other than the Lenovo ThinkSystem ST650 V2?

A: No. The 4XG7A72938 is a Lenovo-validated option kit for the ST650 V2 platform specifically. While the underlying Intel Xeon Gold 5320T uses the LGA 4189 socket common to third-generation Xeon Scalable platforms, Lenovo option kits are validated against specific server models and firmware levels. Do not assume cross-platform compatibility without verifying through Lenovo ServerProven.

Q: What is the TDP of the Intel Xeon Gold 5320T in this option kit?

A: The processor has a 150W thermal design power. Plan your cooling and power delivery accordingly — this is a high-TDP option that requires the ST650 V2's full thermal management capability to run within spec under sustained load.

Q: How many processor cores and threads does the 4XG7A72938 provide?

A: The Intel Xeon Gold 5320T delivers 20 physical cores with Intel Hyper-Threading, presenting 40 logical threads to the operating system. Core breakdown: 6 high-priority cores at 2.6 GHz and 14 efficiency cores at 2.1 GHz base, with an all-core boost ceiling of 3.5 GHz.

Q: What processor generation is this?

A: Third-generation Intel Xeon Scalable (Ice Lake), fabricated on Intel's 10nm SuperFin process node. This generation offers improved instructions-per-clock performance versus the prior Cascade Lake (14nm) generation.

Q: Can the 4XG7A72938 be used in a dual-processor ST650 V2 configuration?

A: The ST650 V2 supports dual-socket configurations. Whether this specific processor option supports dual-socket deployment should be confirmed against the ST650 V2 technical specification guide and Lenovo ServerProven, as not all Xeon Scalable SKUs are validated for symmetric multi-processing in every chassis configuration.

Marty Allison

When I spec the 4XG7A72938 into a surveillance server build, the number I start with is 150W — that's the TDP floor for this processor under sustained load, and it shapes every other decision in the rack: PSU sizing, cooling path, UPS capacity. The Intel Xeon Gold 5320T's 20 cores and 40 threads are genuinely useful for large-camera-count VMS deployments, but this is not a processor you drop into an underpowered chassis and call it done.

Technical Highlights:

• 20C/40T at 2.3 GHz base, 3.5 GHz boost: The 1.2 GHz boost headroom handles latency-sensitive single-thread operations (live view, alert triggers) without requiring a higher base-clock SKU that would push TDP further.
• Tiered core structure — 6 high-priority at 2.6 GHz: On an APO-aware OS scheduler, those 6 high-priority cores become the natural home for foreground VMS processes, leaving the 14 efficiency cores for background indexing and I/O — a real throughput improvement in mixed-workload server environments.
• 10nm Ice Lake architecture: The IPC improvement over Cascade Lake is measurable on inference workloads. If you're running edge analytics (object classification, license plate recognition) server-side rather than on-camera, the per-clock efficiency gain reduces the core count needed to keep up with a given camera density.

Deployment Considerations:

• Confirm the ST650 V2 firmware is at the revision level that validates the Xeon Gold 5000T series — early ST650 V2 firmware images predate this processor family and will not POST with this option installed.
• At 150W, this processor should not be paired with a single low-wattage PSU in a dense storage configuration; the ST650 V2's redundant PSU option is worth the budget if this server is in a production surveillance role.

The 4XG7A72938 is the right call for a ThinkSystem ST650 V2 deployed as a primary VMS server in a 64-to-128 camera enterprise installation where tower form factor is required and sustained analytics throughput — not just stream recording — is the workload driver.