Lenovo 4XG7A72946 ST650 V2 Silver 4316 20C 150W 2.3GHZ

Lenovo 4XG7A72946 Xeon Silver 4316 20-Core Server Processor

Overview

The Lenovo 4XG7A72946 is a factory-genuine Intel Xeon Silver 4316 processor option for the ThinkSystem ST650 V2 tower server — a 20-core, 40-thread Ice Lake chip running at 2.3 GHz base with 3.4 GHz boost, rated at 150W TDP. If you are speccing a mid-range enterprise server that needs to balance per-core throughput with power-budget discipline, this is the processor tier to evaluate. It targets workloads like virtualization hosts, surveillance recording and analytics servers, database back-ends, and distributed enterprise applications where raw core count matters more than maximum single-thread speed.

Key Features

• 20 Cores / 40 Threads (Intel Xeon Silver 4316): Forty logical threads give hypervisors enough headroom to run a dense VM stack without resource contention. On a surveillance deployment running VMS software alongside analytics workloads, the additional thread depth keeps recording and event-processing pipelines from competing for the same execution resources.
• 2.3 GHz Base / 3.4 GHz Boost: The 1.1 GHz boost headroom means burst-heavy workloads — batch analytics processing, report generation, license-plate recognition — get a meaningful clock uplift without requiring you to step up to a Xeon Gold SKU. Day-to-day steady-state tasks run efficiently at base frequency to preserve thermal and power margin.
• 30 MB L3 Cache: A larger last-level cache reduces expensive main-memory fetches on working sets that fit within cache — beneficial for database query engines and video indexing operations where repeated access to the same data blocks is common. Less cache thrashing translates directly to more consistent latency under load.
• 150W Thermal Design Power: At 150W, this processor sits in the mid-range of the Ice Lake Xeon Silver lineup. Plan your ST650 V2 chassis cooling accordingly — Lenovo does not include a cooler with the 4XG7A72946, so a compatible heatsink must be sourced separately before deployment. Skipping this step will block system POST.
• 3rd Generation Intel Xeon Scalable (Ice Lake, 10nm): The Ice Lake microarchitecture delivers improved memory bandwidth and AVX-512 instruction throughput compared to the prior Cascade Lake generation. For workloads that lean on vector math — AI inference, video transcoding, scientific compute — the per-core efficiency improvement is real and not just a paper spec.
• 10.4 GT/s System Bus Rate: Higher interconnect bandwidth reduces the likelihood of bus saturation on multi-socket or memory-bandwidth-intensive workloads. In a dual-socket ST650 V2 configuration, this keeps inter-socket communication from becoming a bottleneck as core count scales up.
• 40 Threads via Hyper-Threading: Intel Hyper-Threading on all 20 physical cores doubles the logical thread count visible to the operating system. On Linux-based VMS appliances and containerized workloads, the scheduler fills those logical threads effectively, improving utilization on mixed I/O and compute workloads without additional hardware cost.
• LGA 4189 Socket, 64-bit Operating Modes: LGA 4189 is the Ice Lake Xeon socket standard — compatible with ST650 V2 motherboards designed for this generation. Confirm your ST650 V2 board revision supports 3rd Gen Xeon Scalable before ordering; earlier ST650 V2 board revisions may require a firmware update to fully expose all processor features.

Integration and Compatibility

The 4XG7A72946 is spec'd specifically for the Lenovo ThinkSystem ST650 V2 tower server platform. It occupies a primary or secondary processor socket depending on your ST650 V2 configuration. Because the cooler is not included, pair this processor with a compatible Lenovo heatsink option for the ST650 V2 chassis before commissioning. Memory compatibility follows the ST650 V2 platform's DDR4 support matrix — refer to Lenovo's ServerProven list to confirm DIMM configurations when building out the full system. For surveillance-specific deployments, the ST650 V2 with the Xeon Silver 4316 is well-positioned to run leading VMS platforms including Milestone XProtect, Genetec Security Center, and Hanwha Wisenet WAVE, all of which publish server sizing guides based on camera count and analytics load that you can use to validate whether this core/thread configuration meets your channel requirements.

Frequently Asked Questions

Q: Does the Lenovo 4XG7A72946 include a heatsink or cooler?

A: No. The 4XG7A72946 is a processor-only option. A compatible heatsink for the ThinkSystem ST650 V2 must be sourced and installed separately. The system will not POST without a properly seated cooler.

Q: What server is the 4XG7A72946 designed for?

A: This processor is designed for the Lenovo ThinkSystem ST650 V2 tower server platform, using the LGA 4189 socket for 3rd Generation Intel Xeon Scalable (Ice Lake) processors.

Q: What is the boost clock speed of the Intel Xeon Silver 4316?

A: The Xeon Silver 4316 turbos up to 3.4 GHz from a 2.3 GHz base frequency, giving burst workloads like analytics processing and license-plate recognition meaningful short-duration clock uplift.

Q: How many cores and threads does the 4XG7A72946 processor provide?

A: The Intel Xeon Silver 4316 delivers 20 physical cores and 40 logical threads via Intel Hyper-Threading, operating in 64-bit mode.

Q: What is the TDP of the 4XG7A72946?

A: The Xeon Silver 4316 has a Thermal Design Power (TDP) of 150W. Ensure your ST650 V2 chassis cooling configuration is rated to handle this thermal output before installation.

Q: Is this processor compatible with dual-socket ST650 V2 configurations?

A: Yes. The ST650 V2 supports dual-socket configurations using LGA 4189 Xeon Scalable processors. The 4XG7A72946 can populate either the primary or secondary socket, with a 10.4 GT/s inter-socket bus rate supporting balanced multi-socket workloads.

Marty Allison

The 4XG7A72946 puts a 20-core, 150W Ice Lake Xeon Silver inside the ST650 V2 chassis — a deliberate tradeoff that favors thread density and platform longevity over raw single-core headroom. The 30MB L3 cache and 10.4 GT/s bus rate are the two specs I keep coming back to when evaluating this SKU against lighter-duty Xeon Silver options: both matter significantly once you push the server into sustained multi-stream analytics or concurrent database query loads.

Technical Highlights:

• 40-Thread Execution: Twenty physical cores with Hyper-Threading gives VMS hosts and containerized surveillance back-ends enough logical parallelism to absorb mixed recording, analytics, and management traffic without pinning cores — relevant once camera counts climb past 32 channels with motion analytics enabled.
• 3.4 GHz Turbo Boost: The 1.1 GHz boost range from 2.3 GHz base means time-critical burst operations — event-driven analytics triggers, batch export jobs — get meaningful acceleration without requiring a step up to a Xeon Gold tier and its associated cost premium.
• 10nm Ice Lake Architecture: The 10nm Ice Lake process versus prior 14nm Cascade Lake delivers measurable improvements in AVX-512 throughput and memory bandwidth efficiency — worth noting if the ST650 V2 will run AI inference workloads alongside video management.

Deployment Considerations:

• No cooler is included with the 4XG7A72946 — this is a hard pre-boot dependency, not an optional accessory. Order and install a Lenovo-compatible ST650 V2 heatsink before the processor ships to site, or you will delay commissioning.
• At 150W TDP, this processor occupies the upper thermal envelope for the Silver 4000 series — verify the ST650 V2 chassis airflow configuration (fan tier and baffle) is rated for this heat load before populating a second socket in a dual-processor build.

This processor is the right call for a dedicated on-premises surveillance server handling 32–96 camera channels with per-camera analytics, where you need the ST650 V2's tower form factor for locations without rack infrastructure but cannot compromise on processing headroom.