Lenovo 4XG7A72951 ST650 V2 Gold 5318N 24C 150W 2.0-2.1GHZ

Lenovo 4XG7A72951 Intel Xeon Gold 5318N 24-Core Server Processor

Overview

The Lenovo 4XG7A72951 is a factory-configured Intel Xeon Gold 5318N processor option for the ThinkSystem ST650 V2 server — a 24-core, 48-thread chip built for compute-dense enterprise workloads where you need sustained multi-threaded throughput without burning through your power budget. Running on Intel's 10nm Ice Lake architecture, the 5318N delivers a 2.1 GHz base clock with a 3.4 GHz boost ceiling across 24 cores and 48 threads, all within a 150W TDP envelope — a meaningful constraint when you're planning rack power and cooling for a multi-socket or high-density deployment. The LGA 4189 socket and 3rd Generation Intel Xeon Scalable platform underpin this processor, meaning it integrates into the ST650 V2's dual-socket architecture with full support for the platform's memory, PCIe 4.0, and I/O capabilities. For integrators speccing out a server for video management, data analytics, or enterprise infrastructure, the Lenovo server line with the 4XG7A72951 represents a well-balanced mid-tier compute option in the Xeon Gold 5000 series.

Key Features

• 24 Cores / 48 Threads: More simultaneous threads mean more parallel processes — critical when running a VMS platform like Milestone XProtect or Genetec alongside analytics engines and recording streams. Workloads that would peg a 16-core chip at 90% utilization have meaningful headroom here.
• 2.1 GHz Base / 3.4 GHz Boost: The base clock covers sustained multi-threaded loads (encoding, transcoding, concurrent database queries), while the 3.4 GHz boost handles burst single-threaded tasks — licensing checks, UI rendering, transaction processing — without a separate high-frequency chip in the build.
• Asymmetric Core Configuration — 8 High-Priority + 16 Standard Cores: The 5318N's core topology includes 8 high-priority cores running at 2.3 GHz and 16 standard cores at 2.0 GHz. This matters for mixed workloads where latency-sensitive threads (user-facing queries, alert handling) need priority scheduling alongside background processing tasks.
• 150W TDP: At 150 watts, this processor fits within a standard dual-socket server power envelope without requiring exotic cooling. For rack planning in a wiring closet or IDF, that's an important number — pair it against your UPS and PDU capacity before finalizing the build.
• 11.2 GT/s System Bus: The UltraPath Interconnect rate of 11.2 GT/s sustains high memory bandwidth between the processor and the platform's DDR4 memory subsystem — relevant when you're streaming large datasets or running in-memory analytics at scale.
• 10nm Ice Lake Lithography: Third-generation Xeon Scalable on 10nm delivers better instructions-per-clock efficiency than prior-generation 14nm parts. That translates to more compute per watt — a factor in dense rack environments where cooling costs are real.
• 64-bit Operating Mode: Full 64-bit execution support is table stakes for any modern enterprise OS or hypervisor — VMware ESXi, Windows Server, Red Hat Enterprise Linux all run natively without emulation overhead.
• LGA 4189 Socket Compatibility: The processor drops into the ST650 V2's LGA 4189 socket, part of the Ice Lake Xeon Scalable platform. This is a platform-generation detail that matters at refresh time — confirm socket compatibility before ordering a replacement or upgrade part.

Integration & Compatibility

The 4XG7A72951 is a Lenovo-configured option part for the ThinkSystem ST650 V2, meaning it is validated and sourced as part of Lenovo's server platform — not a generic retail tray processor. This distinction matters for firmware compatibility and platform support. The ST650 V2 supports dual-socket configurations with LGA 4189 processors, so a second 4XG7A72951 can be added for symmetric multi-processing workloads if the workload justifies the additional 150W draw and cost. For enterprise deployments running network video recorders or VMS backends, the 24-core count provides enough parallel processing capacity to handle dozens of simultaneous high-resolution streams alongside server-side analytics. Integrators evaluating server-class compute for physical security infrastructure should also review server component compatibility guides and consult Lenovo's ServerProven database for validated memory, storage, and NIC configurations on the ST650 V2 platform. For power infrastructure planning, ensure your UPS and power distribution can handle the full server draw — not just the processor TDP in isolation.

Frequently Asked Questions

Q: What server platform is the Lenovo 4XG7A72951 compatible with?

A: The 4XG7A72951 is a Lenovo option part configured for the ThinkSystem ST650 V2 server. It uses the LGA 4189 socket and is validated on the 3rd Generation Intel Xeon Scalable (Ice Lake) platform.

Q: How many cores and threads does the Xeon Gold 5318N provide?

A: The Intel Xeon Gold 5318N delivers 24 physical cores and 48 threads via Intel Hyper-Threading, supporting highly parallel workloads including multi-stream video processing and enterprise application hosting.

Q: What is the TDP of the 5318N processor in the 4XG7A72951?

A: The processor carries a 150W TDP. Plan your server's power supply, UPS capacity, and rack cooling around the full system draw — the processor TDP is one component of total server power consumption.

Q: What is the difference between the high-priority and standard cores on the 5318N?

A: The 5318N includes 8 high-priority cores running at 2.3 GHz and 16 standard cores at 2.0 GHz. This asymmetric layout allows the OS scheduler to prioritize latency-sensitive threads on the faster cores while background tasks run on the standard-frequency cores.

Q: Can the ST650 V2 run two 4XG7A72951 processors simultaneously?

A: The ST650 V2 supports dual-socket configurations. A second LGA 4189-compatible Xeon Scalable processor can be installed for symmetric multi-processing, doubling core and thread count for workloads that scale across sockets.

Q: Is the 4XG7A72951 a tray processor or a Lenovo-validated option part?

A: It is a Lenovo-configured option part, validated for the ThinkSystem ST650 V2 platform. It is not a generic retail or OEM tray processor — this distinction is relevant for platform firmware compatibility and support.

Jerry Tildsen

The 4XG7A72951 is one of those parts that looks straightforward on a spec sheet but requires some deliberate planning before you drop it into a build. What stands out to me is the asymmetric core layout: 8 high-priority cores at 2.3 GHz and 16 standard cores at 2.0 GHz across a 24-core / 48-thread die. In a VMS or analytics backend context, that topology is genuinely useful — your latency-sensitive recording manager threads get priority scheduling headroom while bulk transcoding or storage I/O tasks run on the standard-frequency cluster without fighting for the same clock budget.

Technical Highlights:

• 24C/48T at 150W TDP: You get 48 concurrent hardware threads within a 150W power envelope — competitive thread-per-watt for Ice Lake-SP. That matters when you're calculating rack PDU capacity across 10+ servers in a high-density deployment.
• 3.4 GHz Boost Frequency: Single-threaded peak at 3.4 GHz means burst workloads — license service calls, alert dispatching, UI query responses — get real clock headroom without requiring a high-frequency SKU for the whole platform.
• 11.2 GT/s UltraPath Interconnect: The system bus rate sustains the memory bandwidth the platform needs for in-memory analytics or concurrent high-resolution stream decoding. Bottleneck here shows up fast when you underspec memory channels — don't skimp on DIMM population.

Deployment Considerations:

• This is a Lenovo-specific option part for the ST650 V2 — it is not interchangeable with generic Ice Lake tray processors for warranty or firmware purposes. Confirm the target server's processor slots are unoccupied or match before ordering.
• At 150W per socket, a dual-socket ST650 V2 configuration draws 300W at the CPU level alone before memory, storage, and NIC loads. Size your UPS and PDU at 1.5–2x the processor TDP to avoid headroom surprises under full load.

For a physical security operations center backend — Milestone, Genetec, or Avigilon running server-side analytics on 50+ camera streams — the 24-core count and asymmetric priority scheduling on the 5318N make the ST650 V2 with the 4XG7A72951 a credible mid-tier platform without stepping up to the higher-TDP Gold 6000 series.