Lenovo 4XG7A38073 SR650 Xeon Gold 6258R

Lenovo 4XG7A38073 Intel Xeon Gold 6258R 28-Core Processor Option for ThinkSystem SR650

Overview

The Lenovo 4XG7A38073 is an Intel Xeon Gold 6258R processor option kit designed for the ThinkSystem SR650 2-socket rack server. Built on 2nd Generation Intel Xeon Scalable architecture and Intel's 14nm process node, this 28-core, 56-thread processor runs at a 2.7 GHz base clock with a 4.0 GHz boost — giving you headroom for both sustained multi-threaded workloads and latency-sensitive single-threaded tasks in the same chassis. If you're scaling a surveillance VMS backend, a virtualization host, or a data processing node and need to move beyond the SR650's initial CPU configuration, this is the factory-sourced processor option to do it.

Key Features

• 28 Cores / 56 Threads via Hyper-Threading: More threads mean more concurrent VM instances or analytics processes without oversubscribing physical cores. In a dense VMS deployment running 64+ camera streams with server-side motion analytics, the thread count determines whether your decode pipeline saturates before your storage does. 56 logical processors give the scheduler real room to work.
• 2.7 GHz Base / 4.0 GHz Turbo Boost: The 1.3 GHz spread between base and boost matters when workloads are bursty — alarm-triggered recording, batch export, or real-time transcoding spike hard and briefly. At 4.0 GHz turbo, those spikes resolve faster without requiring a higher TDP bin across all cores simultaneously.
• 38.5 MB Last-Level Cache: A large L3 cache reduces main memory round-trips on latency-sensitive tasks. For database-backed VMS platforms (SQL Server, PostgreSQL) managing large event indexes, more cache means fewer DRAM accesses per query — perceptible in live search and audit log retrieval.
• 205W TDP — Plan Your Power Budget: This processor draws up to 205W under load. That's a material contribution to the SR650's per-socket power envelope. Confirm your datacenter's per-rack power allocation and the SR650's PSU configuration before deploying two of these in a dual-socket build — the combined CPU TDP alone approaches 410W before memory, storage, and NICs are factored in.
• LGA 3647 (Socket P) on 2nd Gen Xeon Scalable Platform: The LGA 3647 socket supports the full 2nd Gen Intel Xeon Scalable feature set — including Intel Optane DC Persistent Memory, up to 6-channel DDR4 per socket, and UPI interconnect for coherent dual-socket operation. These platform capabilities are unlocked at the motherboard level; the processor itself is the prerequisite.
• 2x UPI Links for Dual-Socket Coherency: Two Ultra Path Interconnect links connect this processor to its socket partner in a two-socket SR650 configuration. UPI handles cache-coherent memory access across sockets — critical for workloads that span NUMA domains, such as in-memory analytics or large VM migrations between nodes.
• 64-Bit Operating Mode: Supports all current enterprise operating systems and hypervisors (VMware vSphere, Microsoft Hyper-V, Red Hat Enterprise Linux, Windows Server) without architectural constraints. Not a differentiator in 2024 — but worth confirming for any embedded or legacy OS evaluation.
• 14nm Process Node — Mature, Validated Silicon: The 14nm Cascade Lake architecture has an extensive production track record in enterprise environments. Driver support, microcode, and BIOS compatibility across the SR650 platform are mature and well-tested — fewer surprises during initial deployment compared to first-generation silicon on a newer node.

Integration and Compatibility

The 4XG7A38073 is a Lenovo-qualified processor option for the Lenovo ThinkSystem server line, specifically validated for the SR650. Lenovo processor option kits include the CPU pre-validated against the SR650's system board, BIOS, and thermal management firmware — this matters because Intel Xeon Scalable processors require BIOS microcode updates to unlock specific stepping features, and Lenovo's options ship pre-matched to the platform. Verify your SR650's current BIOS version and system board revision against Lenovo's compatibility matrix before installing.

This processor operates within the server and compute infrastructure ecosystem and is compatible with the dual-socket SR650 chassis. For a second-socket upgrade, two matching processor option kits are required — mixed stepping configurations are generally unsupported. Memory configuration may also need to adjust: the 6-channel DDR4 architecture per socket means optimal memory bandwidth requires populating channels in matched pairs.

For environments running network video recorders or VMS servers at scale, the combination of 28 cores, high turbo frequency, and large cache makes this a viable processor for platforms like Genetec Security Center, Milestone XProtect, or Avigilon Control Center when deployed on validated server hardware. Confirm VMS vendor's hardware compatibility list for SR650 platform support independently.

Power delivery requirements should be reviewed against your UPS and power infrastructure — a dual-socket SR650 with two 6258R CPUs represents a significant per-chassis load that should be reflected in both UPS sizing and datacenter PDU allocation.

Frequently Asked Questions

Q: Is the Lenovo 4XG7A38073 compatible with the ThinkSystem SR650?

A: Yes. The 4XG7A38073 is a Lenovo-qualified processor option specifically for the ThinkSystem SR650 platform. Always verify your SR650's current BIOS version against Lenovo's compatibility matrix before installation.

Q: Does the 4XG7A38073 include a CPU cooler?

A: No. A cooler is not included with this processor option kit. The SR650 uses a chassis-integrated cooling solution — verify that your SR650's heatsink and airflow configuration support the 205W TDP of this processor.

Q: What is the TDP of the Xeon Gold 6258R in the 4XG7A38073?

A: The Intel Xeon Gold 6258R has a Thermal Design Power (TDP) of 205W. This is a high-TDP processor — confirm that your SR650 power supply configuration and datacenter power allocation can support the full load, particularly in dual-socket deployments.

Q: Can I use the 4XG7A38073 in a dual-socket SR650 configuration?

A: Yes, the SR650 supports dual-socket operation via two LGA 3647 (Socket P) sockets connected by UPI links. Two matching 4XG7A38073 processor option kits are required for a dual-socket build — mixed processor configurations are generally not supported on this platform.

Q: What is the maximum turbo frequency for this processor?

A: The Intel Xeon Gold 6258R in this option kit boosts to 4.0 GHz under favorable thermal and power conditions. Base clock is 2.7 GHz across all 28 cores.

Q: Does the Xeon Gold 6258R support Intel Optane Persistent Memory?

A: The LGA 3647 Socket P platform used by the 6258R supports Intel Optane DC Persistent Memory modules. Whether the SR650 system board and BIOS configuration enable this feature depends on the specific SR650 model and firmware revision — consult Lenovo's platform configuration guide for your SR650 variant.

Karl Wilson

The 4XG7A38073 is one of the higher-TDP options in the SR650 processor lineup — 205W for a single socket is not trivial, and it's the first thing I check when a customer wants to drop this into an existing SR650 that was originally configured with a lower-wattage CPU. The 28-core, 56-thread count and 4.0 GHz turbo make it a strong fit for compute-heavy VMS workloads, but the power envelope demands a deliberate infrastructure review before you commit.

Technical Highlights:

• 28 Cores / 56 Threads: Provides the parallelism needed for dense virtualization or multi-stream video analytics — 56 logical processors mean a vSphere host can run substantially more VMs before hitting CPU contention.
• 4.0 GHz Turbo Boost: The 1.3 GHz gap between base (2.7 GHz) and turbo (4.0 GHz) is meaningful for bursty VMS workloads — alarm processing, live export, and motion-triggered recording all benefit from per-core frequency headroom.
• 38.5 MB L3 Cache: Reduces DRAM latency on database-backed workloads; VMS platforms with large event indexes see measurable improvement in search and audit retrieval when the working set fits in cache.

Deployment Considerations:

• A dual-socket SR650 with two of these processors presents a 410W combined CPU TDP before accounting for memory, drives, and NICs — size your PSU configuration and UPS capacity accordingly before finalizing the BOM.
• No cooler is included; the SR650's integrated heatsink must be rated for the 205W TDP. If you're upgrading from a lower-TDP processor, confirm the existing thermal solution is approved for this wattage before powering on.

This processor option is best suited for SR650 deployments that serve as VMS recording servers or virtualization hosts in mid-to-large physical security infrastructure — environments where sustained multi-threaded throughput and high single-core turbo frequency both matter, and where the power infrastructure has been sized to support a high-density compute chassis.