Lenovo 4XG7A72943 ST650 V2 Silver 4310T 10C 105W 2.3GHZ

Lenovo 4XG7A72943 Intel Xeon Silver 4310T 10-Core Processor Option Kit

Overview

The Lenovo 4XG7A72943 is an Intel Xeon Silver 4310T processor option kit designed for the ThinkSystem ST650 V2 tower server. Built on Intel's 3rd Generation Xeon Scalable (Ice Lake) architecture at 10 nm, the 4310T delivers 10 cores and 20 threads with a 2.3 GHz base clock and a 3.4 GHz boost frequency — a configuration that fits compute-moderate workloads where sustained throughput matters more than raw peak performance. At 105W TDP, it runs at the upper edge of the Silver-tier power envelope, so factor that into your chassis thermal budget when populating a dual-socket ST650 V2.

If you are speccing a rack or tower server for a surveillance recording platform, virtualized access control management, or an on-premises VMS backend, the Xeon Silver 4310T occupies a sensible middle ground between the entry-level Silver 4300-series parts and the higher-core-count Gold options. The Lenovo ThinkSystem line is engineered for this kind of always-on infrastructure workload.

Key Features

• 10 Cores / 20 Threads (Intel Xeon Silver 4310T): Twenty logical processors available to the OS mean you can run a VMS host, a database service, and a management VM concurrently without thrashing the scheduler. For a single-socket ST650 V2 handling 64–128 camera streams via software decode, 10 physical cores provides comfortable headroom without overbuying into Gold-tier pricing.
• 2.3 GHz Base / 3.4 GHz Boost: The 1.1 GHz spread between base and boost means bursty analytical workloads — motion indexing, event search, license-plate query — get the clock headroom they need, while sustained background recording stays power-efficient at base. On Ice Lake, Intel's Turbo Boost 2.0 manages this automatically per-core.
• 15 MB L3 Cache (Intel Smart Cache): A 15 MB last-level cache at 10 cores is 1.5 MB per core — typical for the Silver 4000 series. For VMS workloads writing sequential video buffers, cache miss penalty is low; for database or analytics engines querying large working sets, the cache keeps frequently-accessed data off the memory bus.
• 105W Thermal Design Power: At 105W TDP, this is a higher-draw Silver variant compared to the 65W or 85W members of the 4310 family. No cooler is included — the ST650 V2's qualified heatsink must be installed separately. If you are populating both CPU sockets, confirm your power supply configuration covers the combined CPU draw plus storage, memory, and expansion card load.
• LGA 4189 Socket (Ice Lake-SP): The LGA 4189 platform supports up to 8-channel DDR4 memory per socket and PCIe 4.0 — both significant for a surveillance or compute server. PCIe 4.0 doubles the bandwidth of Gen 3 lanes, which matters if you are adding a high-throughput NVMe storage tier or a GPU-accelerated analytics card alongside this processor.
• 10.4 GT/s UPI Interconnect: In a dual-socket ST650 V2 build, the Ultra Path Interconnect at 10.4 GT/s keeps NUMA latency manageable for workloads that span both sockets. For single-socket builds, UPI is not in play, but the platform's memory bandwidth still benefits from the Ice Lake memory controller improvements.
• 20 Threads / 64-bit Operating Mode: Full 64-bit support with 20 hardware threads enables modern hypervisors (VMware ESXi, Microsoft Hyper-V, Linux KVM) to run efficiently. For a security operations server hosting VMS, NMS, and access control software on separate VMs, 20 threads give the scheduler meaningful isolation between tenants.
• 3rd Gen Intel Xeon Scalable / Ice Lake / 10 nm: The Ice Lake-SP generation introduced improved per-core IPC over Cascade Lake, better memory bandwidth, and built-in Advanced Matrix Extensions precursors. For practical server deployments, the IPC uplift means fewer cores needed for the same frame-processing throughput compared to prior-generation equivalents.

Integration & Compatibility

The 4XG7A72943 is a Lenovo-qualified processor option for the ThinkSystem ST650 V2. The LGA 4189 socket and the 3rd Gen Intel Xeon Scalable platform are unique to this server generation — this CPU is not cross-compatible with earlier ST650 (V1) or ST550 systems, which use different socket and chipset generations. Verify your ST650 V2 system board firmware is at the Lenovo-recommended level before installing a new processor option to ensure microcode support for Ice Lake-SP.

Memory configuration for the 4310T follows the ST650 V2's DDR4 RDIMM/LRDIMM channel rules. The processor supports up to 8 memory channels per socket; however, actual populated channel count depends on DIMM placement per Lenovo's memory configuration guide. For network video recorder builds or VMS appliances, pair this processor with sufficient ECC RDIMM capacity — frame buffering and indexing are memory-bandwidth-sensitive operations.

No cooler is included with the 4XG7A72943. Order the appropriate Lenovo ThinkSystem heatsink for the ST650 V2 chassis — standard or performance, depending on your airflow configuration and whether the second socket is populated. Running without a qualified heatsink will trigger thermal shutdown. For server accessories including heatsinks and rail kits, verify Lenovo's compatibility matrix for the ST650 V2 platform.

From a software stack standpoint, the Xeon Silver 4310T is supported by all major enterprise operating systems and hypervisors on the tower server platform: Windows Server, RHEL, SUSE, VMware ESXi, and Microsoft Hyper-V. For security deployments, this matters — VMS platforms like Milestone XProtect, Genetec Security Center, and Axis Camera Station Server all publish minimum CPU requirements; the 4310T's 10-core / 20-thread profile meets or exceeds those thresholds for mid-scale deployments.

Frequently Asked Questions

Q: Is the Lenovo 4XG7A72943 compatible with the ThinkSystem ST650 V2 only, or does it work in other Lenovo servers?

A: The 4XG7A72943 is a Lenovo-qualified processor option for the ThinkSystem ST650 V2. The LGA 4189 socket and 3rd Gen Intel Xeon Scalable (Ice Lake-SP) platform are generation-specific. It is not compatible with ST650 V1, ST550, or other prior-generation Lenovo tower servers using different socket types. Always verify the Lenovo ServerProven compatibility list for your specific system board revision.

Q: Does the 4XG7A72943 include a heatsink or thermal solution?

A: No. The Lenovo 4XG7A72943 does not include a cooler or heatsink. You must order the appropriate Lenovo ThinkSystem ST650 V2 heatsink separately — standard or high-performance depending on your chassis airflow and socket population. Installing the processor without a qualified heatsink will cause thermal shutdown.

Q: Can the Xeon Silver 4310T run a VMS and virtualized workloads simultaneously on the ST650 V2?

A: Yes. The 4310T's 10 cores and 20 threads support enterprise hypervisors (VMware ESXi, Hyper-V, KVM) and provide enough thread headroom to run a VMS server (e.g., Milestone XProtect, Genetec Security Center), a management VM, and background services concurrently on a mid-scale deployment without significant resource contention.

Q: What is the TDP of the Intel Xeon Silver 4310T, and how does that affect power planning?

A: The 4310T has a 105W TDP. This is at the higher end of the Silver 4300 tier. In a dual-socket ST650 V2 build, plan for up to 210W of CPU thermal load before adding memory, storage, and expansion cards. Confirm the ST650 V2 power supply configuration supports the full populated system draw under worst-case conditions.

Q: What is the maximum boost frequency of the 4310T, and when does it engage?

A: The Intel Xeon Silver 4310T boosts up to 3.4 GHz via Intel Turbo Boost 2.0. Boost engages automatically on active cores when thermal and power headroom permits — typically during bursty analytical tasks like video motion indexing or license-plate search, where single-threaded or lightly-threaded code paths benefit most from the higher clock.

Q: Is the 4XG7A72943 a new, factory-sealed unit?

A: Yes. The 4XG7A72943 is sourced as a factory-new Lenovo processor option kit, genuine and sourced through commercial distribution channels — no grey-market or parallel import units.