Lenovo 4XG7A37938 Xeon Bronze 3204 W/o FAN

Lenovo 4XG7A37938 Intel Xeon Bronze 3204 6-Core Server Processor

Overview

The Lenovo 4XG7A37938 is a 2nd Generation Intel Xeon Scalable processor — specifically the Xeon Bronze 3204 — engineered for entry-level server and workstation deployments where consistent throughput and low per-core licensing costs matter more than raw single-thread speed. Built on Intel's Cascade Lake architecture using a 14 nm process, this is a purpose-built platform component for Lenovo ThinkSystem servers requiring an LGA 3647 (Socket P) CPU. It ships without a heatsink — plan your thermal solution before ordering.

If you're expanding capacity on a Lenovo ThinkSystem platform or provisioning a dedicated server node for a storage, virtualization, or lightweight compute workload, the 4XG7A37938 is a cost-controlled option that keeps the server bill of materials predictable without sacrificing ECC memory or enterprise RAS features.

Key Features

• 6 Cores / 6 Threads at 1.9 GHz Base: The Xeon Bronze 3204 runs 6 physical cores without Hyper-Threading, which simplifies per-core software licensing on workloads billed by physical core count. At 1.9 GHz base, it's suited for steady-state multi-threaded tasks — storage controllers, NVR back-end processing, management plane VMs — rather than burst-heavy transactional compute.
• 85W TDP: An 85-watt thermal envelope is moderate for a 6-core Xeon Scalable part, which gives system architects flexibility when planning chassis power budgets in dense rack environments. This is also low enough that some 1U Lenovo server chassis can accommodate it without requiring premium heatsink kits — verify against your chassis thermal spec sheet.
• 8.25 MB L3 Cache: With 8.25 MB of L3 cache spread across 6 cores, each core gets roughly 1.375 MB — adequate for database buffer pools, NVR index caching, and OS scheduling tasks. Workloads with larger working sets (analytics, in-memory databases) will exhaust this quickly; those deployments should look at higher-tier Xeon Silver or Gold options with deeper cache.
• LGA 3647 (Socket P) — 2nd Gen Xeon Scalable Platform: This socket is native to the Purley and Cascade Lake platforms used across Lenovo ThinkSystem SR500/SR600 series servers. Confirm your target server model's QVL before ordering — not all LGA 3647 boards support Cascade Lake stepping without a BIOS update.
• UPI Bus Interconnect: The Ultra Path Interconnect (UPI) bus supports multi-socket configurations. On a dual-socket board, two 4XG7A37938 units provide a symmetric 12-core pool at controlled cost — relevant for HA clustering scenarios where you need physical redundancy without paying for Gold-tier core density.
• 14 nm Cascade Lake Architecture: The Cascade Lake microarchitecture includes hardware mitigations for Spectre/Meltdown variants that software-only patches on earlier Skylake Xeons could not fully address, and supports Intel DL Boost (VNNI instructions) for integer-based inference workloads — useful if the server is running lightweight AI inferencing alongside its primary role.
• 64-bit Operating Mode, Stepping R1: R1 stepping is the production-stable Cascade Lake revision. Combined with 64-bit support, this CPU is compatible with all current enterprise Linux distributions (RHEL, Ubuntu Server, SLES) and Windows Server SKUs without microcode workarounds.

Integration & Compatibility

The 4XG7A37938 is a Lenovo option part, meaning it is validated and sold for installation into Lenovo ThinkSystem platforms. Before ordering, cross-reference against your server's Hardware Maintenance Manual or the Lenovo ServerProven compatibility database to confirm socket compatibility and BIOS revision requirements for Cascade Lake support. The LGA 3647 socket is physically present on Intel C620-series chipset boards used across the ThinkSystem SR530, SR550, SR570, SR590, SR630, SR650, and related platforms — but Cascade Lake-refresh support depends on board revision and BIOS level.

No cooler is included with this part. You will need to source a compatible Lenovo heatsink separately — the correct heatsink SKU depends on your chassis form factor (1U vs 2U) and whether you are in a single- or dual-socket configuration. Deploying without the correct thermal solution will trigger thermal throttling and may violate the server's support agreement. If you are also specifying network switches or storage for the same rack, confirm the full system power and cooling budget at the rack level before finalizing the BOM.

Frequently Asked Questions

Q: Does the Lenovo 4XG7A37938 include a heatsink or cooler?

A: No. The 4XG7A37938 ships without a fan or heatsink. You must order a compatible Lenovo heatsink separately, matched to your server chassis form factor (1U or 2U) and socket configuration.

Q: Which Lenovo server platforms is the 4XG7A37938 compatible with?

A: This processor is designed for Lenovo ThinkSystem servers using the LGA 3647 (Socket P) with the Intel C620-series chipset — including the SR530, SR550, SR570, SR590, SR630, SR650, and related models. Always verify compatibility against your specific server's QVL and current BIOS version before ordering.

Q: Does the Xeon Bronze 3204 support Hyper-Threading?

A: No. The Xeon Bronze 3204 provides 6 cores and 6 threads — one thread per core. Hyper-Threading is not supported on this processor, which can simplify per-core software licensing but limits concurrent thread count compared to Xeon Silver or Gold parts.

Q: What is the TDP of the 4XG7A37938 and why does it matter for rack planning?

A: The TDP is 85W. In a dual-socket configuration, plan for up to 170W from processors alone before accounting for DIMMs, storage, and NIC power draw. This is relevant for rack PDU sizing and chassis fan curve configuration.

Q: Is the 4XG7A37938 suitable for virtualization workloads?

A: Yes, with appropriate expectations. The 6-core / 6-thread count and 1.9 GHz base clock are adequate for lightweight virtualization (management VMs, NVR back-end, storage controllers), but high-density VM environments or latency-sensitive workloads will benefit from a higher-tier Xeon Silver or Gold processor with more cores and higher base/boost frequencies.

Q: What operating systems are supported with the Xeon Bronze 3204?

A: The processor supports all major 64-bit enterprise operating systems including Red Hat Enterprise Linux, Ubuntu Server, SUSE Linux Enterprise Server, and Microsoft Windows Server. Verify your specific OS version against Lenovo's ServerProven database for full support validation.

James Everett

The 4XG7A37938 is one of those processor options that makes sense in very specific BOM scenarios — specifically when you need a legitimate Cascade Lake Xeon in an LGA 3647 platform but the workload does not justify Silver or Gold pricing. The 1.9 GHz base and 85W TDP are the two numbers I tell integrators to anchor on first when evaluating this part.

Technical Highlights:

• 6 Cores / 85W TDP: At 85W for a 6-core count, the power-per-core ratio is manageable for chassis that have limited thermal headroom — the CPU won't force you into a premium high-airflow heatsink kit unless the chassis mandates it. Verify the Lenovo heatsink option for your specific 1U or 2U chassis before finalizing.
• 8.25 MB L3 Cache (Cascade Lake): Cascade Lake's hardware Spectre/Meltdown mitigations mean you're not paying a software-patch performance tax on this silicon. That matters in environments where the server runs virtualization or containerized workloads that would have taken a measurable hit on pre-Cascade Lake Xeons.
• UPI Bus — Dual-Socket Capable: UPI interconnect means two of these processors can be paired in a dual-socket ThinkSystem board for a symmetric 12-core configuration. At this price tier, that's a cost-effective path to a HA pair without stepping up to Silver core counts.

Deployment Considerations:

• No cooler ships with this part — this is called out explicitly in the product spec. Source the correct Lenovo heatsink for your chassis (1U vs 2U, single vs dual socket) at the same time you order this CPU, or you'll delay commissioning.
• Cascade Lake support on LGA 3647 boards is BIOS-revision dependent. If the target ThinkSystem server was originally shipped with a Skylake-SP CPU, confirm the current BIOS level supports Cascade Lake stepping R1 before swapping processors. Lenovo's ToolsCenter or XClarity Administrator can validate this pre-swap.

Best fit for: ThinkSystem servers being provisioned as NVR compute nodes, lightweight management-plane VMs, or storage controller hosts where per-core software licensing makes a lower core count economically favorable over raw throughput density.