Lenovo 4XG7A63443 SR650 V2 Silver 4309Y 8C 105W 2.8GHZ

Lenovo 4XG7A63443 Intel Xeon Silver 4309Y 8-Core Processor for ThinkSystem SR650 V2

Overview

The Lenovo server option kit 4XG7A63443 drops an Intel Xeon Silver 4309Y into your ThinkSystem SR650 V2 — an 8-core, 16-thread Ice Lake processor running at 2.8 GHz base with a 3.6 GHz Turbo Boost ceiling. At 105W TDP on LGA 4189, this is the right processor for mid-range workloads where you want Ice Lake's 10nm efficiency without climbing into Xeon Gold power and cost territory. If you're building out a video management server, a security operations platform, or a mid-tier enterprise compute node on the SR650 V2 chassis, this is a practical starting point that leaves room to add a second processor socket for future scaling.

Key Features

• 8 Cores / 16 Threads at 2.8–3.6 GHz: The 4309Y delivers 16 simultaneous hardware threads — sufficient for running a VMS with concurrent decode streams, analytics engines, and database queries without bottlenecking on context switching. The 3.6 GHz Turbo ceiling handles short-duration burst workloads (indexing, report generation) without requiring a higher-TDP part.
• 105W Thermal Design Power: At 105W, this processor fits within the SR650 V2's standard cooling envelope without requiring upgraded heatsinks or exotic airflow. For dense rack deployments where thermal headroom and PDU capacity matter, 105W per socket keeps dual-processor configurations manageable — compare that to Xeon Gold parts that can push 150W or more per socket.
• 12MB L3 Cache: 12MB of last-level cache reduces main-memory round trips on data-intensive workloads. For network video recorders and VMS platforms doing motion search or forensic review across multiple streams simultaneously, larger cache means fewer DRAM latency penalties on repeated data access.
• 3rd Generation Intel Xeon Scalable (Ice Lake, 10nm): Ice Lake brings AVX-512 instruction support and Intel DL Boost — useful if your server workload includes AI-accelerated analytics (object detection, license plate recognition) handled in software rather than via a dedicated GPU. The 10nm lithography also improves per-watt efficiency over the prior Cascade Lake generation.
• 10.4 GT/s System Bus: The 10.4 GT/s UPI interconnect rate on LGA 4189 supports high-bandwidth inter-socket communication in dual-CPU SR650 V2 configurations — important for workloads that distribute memory-intensive tasks across both processor sockets.
• 64-bit Operating Mode: Full 64-bit support is table stakes for modern server OS and hypervisor deployments (VMware ESXi, Microsoft Hyper-V, Red Hat Enterprise Linux), but worth confirming in a processor option kit — this part is fully compatible with standard enterprise OS stacks running on the SR650 V2.
• LGA 4189 Socket (Ice Lake-SP): The LGA 4189 socket is specific to 3rd Gen Xeon Scalable processors. This kit is designed for the SR650 V2 platform — do not attempt to install in SR650 V1 (LGA 3647) or any non-SR650 V2 server platform; socket and firmware compatibility are platform-specific.

Integration & Compatibility

The 4XG7A63443 is a Lenovo option kit qualified for the ThinkSystem SR650 V2 server. It is not a standalone boxed retail processor — it ships as a platform-specific kit with appropriate thermal interface material and documentation for SR650 V2 installation. Confirm your SR650 V2 chassis firmware and UEFI version are current before installation; Lenovo's service documentation for the SR650 V2 covers processor replacement procedures and supported configurations. For workloads in physical security and video surveillance infrastructure, this processor pairs well with sufficient DDR4 memory and a qualified surveillance-grade storage configuration — the SR650 V2 supports up to 32 DDR4 DIMM slots, giving you headroom to scale memory alongside processor capacity. For organizations building enterprise compute stacks around a VMS or security operations platform, the SR650 V2 with the 4309Y is a reasonable entry configuration that supports future second-socket expansion if workload demands grow.

Frequently Asked Questions

Q: Is the 4XG7A63443 compatible with the ThinkSystem SR650 V1?

A: No. The 4XG7A63443 uses the LGA 4189 socket and is qualified for the ThinkSystem SR650 V2 only. The SR650 V1 uses LGA 3647 and is not compatible with 3rd Gen Xeon Scalable processors.

Q: What is the base and boost clock speed of the 4309Y processor in this kit?

A: The Intel Xeon Silver 4309Y runs at 2.8 GHz base frequency with a Turbo Boost ceiling of 3.6 GHz across its 8 cores.

Q: How many processor cores and threads does the 4XG7A63443 provide?

A: The Xeon Silver 4309Y included in this kit delivers 8 physical cores and 16 threads via Intel Hyper-Threading.

Q: What is the TDP of this processor, and does it require a special heatsink in the SR650 V2?

A: The 4309Y has a 105W TDP, which fits within the SR650 V2's standard thermal design. Confirm with Lenovo's SR650 V2 configuration guide whether your specific chassis airflow configuration supports this TDP without an upgraded heatsink.

Q: Can the SR650 V2 run two of these processors simultaneously?

A: The ThinkSystem SR650 V2 is a dual-socket platform. A second 4XG7A63443 (or another compatible LGA 4189 Xeon Scalable processor) can be installed in the second socket for increased core count, memory bandwidth, and UPI interconnect throughput.

Q: Is this a retail boxed processor or a Lenovo-specific option kit?

A: This is a Lenovo option kit (part number 4XG7A63443), not a retail boxed Intel processor. It is qualified and packaged specifically for installation in the ThinkSystem SR650 V2 and includes appropriate thermal interface material for that platform.

Eden Phillips

When I see a build spec come through for a VMS or security operations server, my first question is always about core count versus clock speed — and the 4XG7A63443 with its Xeon Silver 4309Y hits a practical balance for mid-range workloads. Eight cores at 2.8 GHz base with a 3.6 GHz boost ceiling and 105W TDP means you're getting Ice Lake efficiency without paying for Gold-tier power budgets you may not need. This is a measured, cost-conscious processor choice for SR650 V2 deployments that aren't pushing 64-core AI inference pipelines.

Technical Highlights:

• 8C/16T at 2.8–3.6 GHz: For a VMS handling 20–40 concurrent camera streams with software decode, 16 threads at Ice Lake IPC levels is workable — especially if you're offloading analytics to a GPU or dedicated appliance. Don't expect this to carry heavy simultaneous AI inference in software without careful workload planning.
• 105W TDP on LGA 4189: Fits the SR650 V2 standard thermal envelope. In a dual-socket config you're looking at 210W processor TDP total — well within the SR650 V2's design, but factor that into your rack PDU and cooling calculations before finalizing the BOM.
• 12MB L3 Cache, 10.4 GT/s UPI: The cache and interconnect specs matter most in dual-socket configurations where NUMA-aware workloads (databases, VMS metadata indexing) benefit from reduced cross-socket latency. In single-socket deployments the UPI spec is largely irrelevant.

Deployment Considerations:

• Verify SR650 V2 UEFI firmware compatibility before ordering — Lenovo has staggered processor support across firmware revisions, and installing a processor before the UEFI update is applied can cause non-boot conditions.
• This is an option kit, not a drop-in retail CPU — do not substitute a retail-boxed Xeon Silver 4309Y expecting identical thermal interface and qualification; the Lenovo kit includes platform-specific components.

The 4XG7A63443 is the right processor for an SR650 V2 being deployed as a mid-tier VMS server or security operations node — particularly where the deployment calls for Ice Lake-generation DDR4 memory bandwidth and AVX-512 support, but the workload doesn't justify climbing to Xeon Gold power and licensing costs.