Lenovo 4XG7A37895 Xeon Gold 5218 W/o FAN

Lenovo 4XG7A37895 Intel Xeon Gold 5218 16-Core Server Processor

Overview

The Lenovo 4XG7A37895 is a 2nd Generation Intel Xeon Gold 5218 processor designed for Lenovo server and workstation platforms. Built on Intel's 14nm fabrication process and socketed for LGA 3647 (Socket P) platforms, it delivers 16 cores and 32 threads with a 2.3 GHz base clock and a 3.9 GHz maximum Turbo Boost frequency — a combination that handles both sustained parallel workloads and latency-sensitive burst tasks without requiring a separate frequency-optimized SKU. This processor ships without a cooling solution; thermal management is the responsibility of the integrator or system builder.

Key Features

• 16 Cores / 32 Threads: Parallel execution across 32 threads means virtualized environments, multi-tenant workloads, and containerized applications can distribute load without contention. For a server running concurrent video analytics or management software instances, this headroom matters.
• 2.3 GHz Base / 3.9 GHz Turbo: The 1.6 GHz spread between base and Turbo gives the platform flexibility — steady-state background tasks run at lower clock and power draw, while foreground queries and burst processing can climb to 3.9 GHz without manual tuning.
• 22 MB L3 Cache: A 22 MB last-level cache reduces main-memory round-trips on working sets that fit in cache — particularly relevant for database query caching, analytics inference pipelines, and OS-level I/O buffering on busy storage nodes.
• 125 W TDP: At 125 W thermal design power, this processor sits in the mainstream enterprise tier — higher-core-count Xeon Gold variants push to 150 W or more. Factor 125 W into your chassis thermal and power budget; a dual-socket configuration demands 250 W from the CPU subsystem alone before memory, storage, and networking loads are added.
• LGA 3647 (Socket P) Interface: The socket is physically large and uses a land-grid array on the motherboard side rather than the processor. Handle with care during installation — bent lands on the socket are not recoverable. Confirm platform compatibility before ordering; this socket is specific to Skylake-SP and Cascade Lake-SP Xeon generations.
• UPI Bus Interconnect: Ultra Path Interconnect replaces QPI in this generation, providing the high-bandwidth, low-latency processor-to-processor and processor-to-platform links required in dual-socket configurations. If you are building a two-socket server, UPI ensures NUMA coherency without a discrete fabric component.
• 64-bit Operating Mode, B1 Stepping: The B1 stepping is the production-stable revision for Cascade Lake, incorporating mitigations for speculative execution vulnerabilities that affected earlier steppings. Relevant for environments where security patch compliance is audited.
• No Cooler Included: The 4XG7A37895 is a processor-only SKU. You must source a compatible heatsink — either the Lenovo platform heatsink for your specific server model or a third-party cooler rated for LGA 3647 and 125 W TDP. Do not power on the system without verifying the cooling solution is correctly seated.

Integration and Compatibility

The 4XG7A37895 targets Lenovo ThinkSystem servers built on the Intel Purley platform — specifically models that accept 2nd Generation Intel Xeon Scalable processors in Socket P. Before deploying this CPU, verify your server's firmware (UEFI) supports 2nd Gen Xeon Scalable processors; some Purley platforms shipped with firmware that only supports 1st Gen and require an update before Cascade Lake CPUs are recognized. Check Lenovo's compatibility matrix for your specific ThinkSystem chassis model against this processor's product number. Memory configuration matters: Cascade Lake supports DDR4 at speeds up to 2933 MHz, but maximum speed depends on populated DIMMs per channel — fill all channels to capacity and speeds may drop. Plan your memory population based on the bandwidth profile your workload actually needs, not maximum slot count.

Frequently Asked Questions

Q: Does the Lenovo 4XG7A37895 include a heatsink or cooling fan?

A: No. The 4XG7A37895 is a processor-only SKU — no heatsink or fan is included. You must source a compatible cooling solution separately before installing and powering on the system.

Q: What socket does the 4XG7A37895 use?

A: It uses the LGA 3647 (Socket P) interface, which is specific to Intel Xeon Scalable processors (Skylake-SP and Cascade Lake-SP generations). Confirm your server motherboard supports this socket before purchasing.

Q: Is the 4XG7A37895 compatible with 1st Generation Xeon Scalable platforms?

A: The 4XG7A37895 is a 2nd Generation Intel Xeon Scalable (Cascade Lake) processor. While the physical socket is the same LGA 3647, platforms designed for 1st Gen Xeon Scalable may require a UEFI firmware update to recognize 2nd Gen processors. Verify platform firmware compatibility before installing.

Q: What is the thermal design power (TDP) of this processor?

A: The 4XG7A37895 has a 125 W TDP. Your cooling solution and server chassis must be rated to handle this thermal output continuously under full load.

Q: Can this processor be used in a dual-socket server configuration?

A: Yes. The Xeon Gold 5218 supports multi-socket configurations via UPI (Ultra Path Interconnect). In a dual-socket deployment, plan for at least 250 W of CPU thermal load before accounting for memory, storage, and I/O subsystems.

Q: What is the maximum Turbo Boost frequency of the Xeon Gold 5218?

A: The processor boosts up to 3.9 GHz from a 2.3 GHz base frequency, giving a 1.6 GHz operating range across sustained and burst workloads.

Jerry Tildsen

The Lenovo 4XG7A37895 is a purpose-sourced Cascade Lake processor for Lenovo ThinkSystem deployments where the integrator is supplying their own cooling — the processor-only format keeps cost down when you are already spec'ing platform heatsinks in bulk. The 125 W TDP and 16-core / 32-thread configuration hit the practical sweet spot for general-purpose compute nodes: enough parallelism to run meaningful virtualization density, enough single-thread headroom at 3.9 GHz Turbo to handle latency-sensitive management tasks without a performance-tier SKU's premium.

Technical Highlights:

• 16 Cores / 32 Threads at 2.3–3.9 GHz: The 1.6 GHz Turbo spread lets the scheduler push latency-critical threads to 3.9 GHz while background tasks run cooler and quieter — useful in environments mixing VMS server duties with analytics or database workloads on the same host.
• 22 MB L3 Cache: Working-set data that fits in 22 MB stays out of main memory entirely. For analytics inference or SQL query caching, this reduces round-trip latency measurably compared to processors with 12–16 MB L3.
• B1 Stepping: Production-stable revision for Cascade Lake; incorporates speculative execution mitigations baked in at the silicon level rather than relying solely on firmware patches — a meaningful audit point for PCI-DSS or FISMA environments where patch-stack documentation is required.

Deployment Considerations:

• The LGA 3647 socket puts the land grid on the motherboard, not the processor — inspect the socket for bent lands before installation and use the socket cover until the moment of installation. One bent land can take a motherboard offline permanently.
• No cooler is included, and this is not a documentation footnote — the system will not POST safely without a correctly seated, platform-rated heatsink. Source the Lenovo-specified heatsink for your ThinkSystem chassis model; third-party LGA 3647 coolers vary in retention compatibility and may not meet Lenovo's thermal validation specs for sustained 125 W operation.

This processor fits Lenovo ThinkSystem server refresh projects where the customer is upgrading from 1st Gen Xeon Scalable CPUs and the chassis, memory, and cooling infrastructure are already in place — drop-in replacement economics with the Cascade Lake performance and stepping improvements, without paying for a bundled cooler you do not need.