Lenovo 4XG7A72955 ST650 V2 Gold 6330N 28C 165W 2.2GHZ

Lenovo 4XG7A72955 Intel Xeon Gold 6330N 28-Core Server Processor

Overview

The Lenovo 4XG7A72955 is a factory-new Intel Xeon Gold 6330N processor option for the ThinkSystem ST650 V2 tower server — a 28-core, 165W part built for workloads that demand sustained multi-threaded throughput without the power envelope of a top-bin Platinum SKU. At 2.2 GHz base with a 3.4 GHz boost and 56 threads via Hyperthreading, it sits squarely in the mid-range of the 3rd Generation Intel Xeon Scalable stack: enough headroom for database, virtualization, and compute-intensive server applications, without overprovisioning watts on a deployment where a 200W+ processor would idle most of the time.

The 6330N designation signals this is an Ice Lake Xeon tuned for network and edge infrastructure — the "N" SKU variant carries Intel's network-optimized silicon characteristics suited for environments where consistent throughput at moderate clock speed matters more than peak single-thread burst. For a tower-form ST650 V2 deployed in a branch office, remote site, or dedicated on-premises compute role, the 4XG7A72955 delivers a balanced compute profile on the LGA 4189 socket that the ST650 V2 platform is designed around.

Key Features

• 28 Cores / 56 Threads: With 28 physical cores and 56 logical threads, this processor handles heavily parallelized workloads — think VM density on a single-socket tower, multi-threaded database queries, or concurrent security analytics processes — without saturating the core count the way a 16-core mid-tier chip would under real enterprise load.
• 2.2 GHz Base / 3.4 GHz Boost: The 1.2 GHz spread between base and boost gives the scheduler meaningful headroom. Lightly threaded tasks — management agents, UI processes, logging daemons — benefit from the 3.4 GHz ceiling, while sustained parallel jobs run consistently at the 2.2 GHz floor. This matters in mixed-workload deployments where you can't predict instantaneous thread demand.
• Hybrid Core Architecture — 18 High-Priority + 10 Low-Priority Cores: The 6330N segments its 28 cores into 18 high-priority cores running at 2.3 GHz and 10 low-priority cores at 1.9 GHz. The scheduler assigns latency-sensitive processes to the faster cores automatically. In practice, this means critical application threads get prioritized compute without manual OS-level core affinity tuning.
• 165W TDP on LGA 4189: At 165W, this processor sits below the 205W–270W range of top-tier Ice Lake Xeons. For a tower server in a space without dedicated cooling infrastructure — branch office, back-of-house IT closet, or edge rack — the lower thermal envelope directly reduces cooling requirements and operating noise, while still delivering 28 cores of compute.
• 11.2 GT/s System Bus: The UPI (Ultra Path Interconnect) bus rate of 11.2 GT/s is the 3rd Gen Xeon standard, enabling high-bandwidth data movement between processor, memory, and I/O subsystems. In storage-heavy or network-attached workloads, bus saturation — not core count — is often the actual bottleneck, and this bus rate keeps pace with the platform's memory and PCIe 4.0 I/O bandwidth.
• 10nm Ice Lake Lithography: The 10nm SuperFin fabrication node brings improved power efficiency compared to the prior 14nm Cascade Lake generation — more compute per watt, which translates directly to lower electricity cost over the life of a 24/7 deployed server and better thermal margin in constrained enclosures.
• 64-Bit Operating Mode / 56 Threads: Full 64-bit instruction support is table stakes for any modern server OS or hypervisor. The 56-thread count is relevant for VM density calculations: if you're sizing Hyper-V or ESXi vCPU allocations, 56 logical processors give meaningful headroom before you hit over-subscription ratios that degrade VM performance.

Integration & Compatibility

The 4XG7A72955 is a Lenovo factory option specifically validated for the Lenovo ThinkSystem ST650 V2 tower server platform. It installs into the LGA 4189 socket — the same socket used across the broader Ice Lake Xeon Scalable server lineup — but processor qualification is platform-specific. Do not assume LGA 4189 socket compatibility alone guarantees support; always verify against the ST650 V2 compatibility matrix before ordering.

As a 3rd Generation Intel Xeon Scalable processor, the 6330N supports DDR4 memory at the speeds and channel configurations the ST650 V2 platform enables. Memory capacity and speed are governed by the platform, not the processor alone — consult the ST650 V2 configuration guide for validated DIMM combinations. For deployments pairing this processor with enterprise server platforms requiring specific memory or I/O configurations, pre-sales engineering is available to verify bill-of-materials compatibility before purchase.

The UNSPSC code 43201503 classifies this component under Electronic Components and Supplies — relevant for procurement systems that use UNSPSC taxonomy for purchasing category routing and spend analysis.

Frequently Asked Questions

Q: What server platform is the Lenovo 4XG7A72955 designed for?

A: The 4XG7A72955 is a processor option validated for the Lenovo ThinkSystem ST650 V2 tower server. It uses the LGA 4189 socket and is part of the 3rd Generation Intel Xeon Scalable platform.

Q: How many cores and threads does the 6330N processor provide?

A: The Intel Xeon Gold 6330N delivers 28 physical cores and 56 logical threads via Intel Hyperthreading Technology.

Q: What is the TDP of this processor?

A: The 6330N has a rated TDP of 165W, positioning it below the high-end Ice Lake Xeons (205W–270W range) and making it suitable for tower deployments with standard cooling infrastructure.

Q: What is the difference between the high-priority and low-priority cores on this processor?

A: The 6330N features 18 high-priority cores running at 2.3 GHz and 10 low-priority cores running at 1.9 GHz. The processor's scheduler assigns latency-sensitive workloads to the faster high-priority cores automatically.

Q: What is the base and boost clock speed of the 4XG7A72955?

A: The processor runs at a 2.2 GHz base frequency with a maximum boost frequency of 3.4 GHz under suitable thermal and power conditions.

Q: Is this processor compatible with other LGA 4189 servers outside the ST650 V2?

A: The LGA 4189 socket is shared across multiple Ice Lake Xeon platforms, but processor support is validated per platform. The 4XG7A72955 is a Lenovo-qualified option for the ST650 V2 specifically — compatibility with other LGA 4189 servers requires separate verification against those platforms' compatibility matrices.

Karl Wilson

The 4XG7A72955 is one of those processor selections that makes sense when you've done the math on workload-to-core ratios and come back with a number that doesn't justify a Platinum-class part. The 6330N's 28-core / 165W profile fills a specific gap: enough parallelism for real VM density or multi-threaded database work, at a thermal envelope a tower server's cooling system can handle without supplemental airflow infrastructure.

Technical Highlights:

• Hybrid priority core split (18 + 10): The 18 high-priority cores at 2.3 GHz paired with 10 lower-frequency cores at 1.9 GHz gives the OS scheduler a real tool — latency-sensitive foreground processes land on faster cores without explicit affinity pinning. In mixed workloads running management services alongside compute jobs, this matters operationally.
• 3.4 GHz boost ceiling: A 1.2 GHz spread from base to boost is meaningful headroom. On a tower server handling burst workloads — end-of-day batch jobs, index rebuilds, scheduled analytics runs — the boost frequency applies where it's needed without requiring a higher-TDP bin.
• 165W TDP for tower-class cooling: Top-tier Ice Lake Xeons push 205W–270W. At 165W, this processor stays within what a standard tower server cooling solution can dissipate comfortably — relevant in branch or edge environments where rack-grade CRAC systems aren't available.

Deployment Considerations:

• LGA 4189 socket compatibility is necessary but not sufficient — the 4XG7A72955 is qualified specifically for the ST650 V2. Verify Lenovo's compatibility matrix before substituting into a different LGA 4189 chassis, as BIOS microcode and platform firmware validation are platform-specific.
• At 165W under sustained load across 28 cores, confirm the ST650 V2 power supply configuration meets headroom requirements — processor TDP alone doesn't account for memory, storage, and PCIe I/O draw running concurrently. Size the PSU to the full system BOM, not just the processor spec sheet.

This processor is a solid fit for a single-socket ST650 V2 deployed as a dedicated on-premises virtualization host or database server in a branch office or remote site — environments where you need genuine multi-core throughput but can't justify rack infrastructure or the power draw of a flagship Xeon.