Lenovo 4XG7A38076 SR650 Xeon Gold 6248R

Lenovo 4XG7A38076 Intel Xeon Gold 6248R Processor for ThinkSystem SR650

Overview

The Lenovo 4XG7A38076 is a factory-qualified processor upgrade delivering the Intel Xeon Gold 6248R — a 24-core, 48-thread Cascade Lake chip — into the Lenovo ThinkSystem SR650 platform. Running at a 3 GHz base with a 4 GHz Turbo Boost ceiling, this is a compute upgrade designed for data-intensive workloads: video analytics servers, network video recorder back-ends, large-scale VMS deployments, and enterprise virtualization hosts where per-core performance and thread density both matter. If your SR650 is running a lighter processor and you're hitting CPU saturation during peak recording or analytics processing windows, this is the upgrade path to evaluate. Browse the full Lenovo server and compute catalog for compatible platform options.

Key Features

• 24 Cores / 48 Threads: The 6248R's 24 physical cores run 48 hardware threads simultaneously via Hyper-Threading. In a VMS environment running simultaneous decode, analytics inference, and recording tasks, that thread density lets the OS scheduler keep workloads separated without contention — practical headroom for 64+ camera streams on a well-provisioned SR650.
• 3 GHz Base / 4 GHz Boost Frequency: A 3 GHz sustained base means consistent throughput under constant load — relevant for 24/7 recording servers where boost-only performance numbers are misleading. The 4 GHz single-core ceiling benefits latency-sensitive tasks like motion event processing and alert dispatch.
• 35.75 MB L3 Cache: The oversized L3 cache reduces main-memory round-trips for working datasets that fit within cache — meaningful for analytics models and database queries that repeatedly access the same data structures. Less memory bus pressure, more predictable latency.
• 205W Thermal Design Power: At 205W TDP, this processor sits at the top of what the SR650's thermal envelope is designed to handle. Verify your SR650 chassis and cooling configuration supports this TDP before ordering — insufficient airflow will trigger thermal throttling and erase the performance advantage. A cooler is not included with the 4XG7A38076 and must be sourced separately.
• LGA 3647 Socket P: Designed for the Socket P / LGA 3647 platform, this processor is a direct drop-in for SR650 configurations that already use this socket — no rework of the motherboard or memory subsystem required. Confirm your SR650 build revision supports 2nd Gen Xeon Scalable before ordering.
• 2nd Gen Intel Xeon Scalable (Cascade Lake): The Cascade Lake microarchitecture adds hardware mitigations for speculative execution vulnerabilities (Spectre/Meltdown) that first-gen Skylake-SP chips handled in software — reducing the performance penalty of those patches, which can be 5–15% on I/O-heavy workloads.
• Up to 1 TB DDR4-SDRAM Support: The 6248R supports up to 1 TB of DDR4 system memory per socket. In a dual-socket SR650 configuration, that opens up to 2 TB total — enough for in-memory databases, large video analytics model caches, or hypervisor deployments running dozens of VMs without swapping.
• 14nm Lithography: The mature 14nm process node offers stable, well-characterized power and thermal behavior. You're not trading silicon lottery variance for bleeding-edge node yields — Cascade Lake parts are predictable in production environments.
• 48-bit / 64-bit Addressing: Full 64-bit operating mode with 48-bit virtual addressing ensures compatibility with modern Linux and Windows Server environments without legacy constraints.

Integration & Compatibility

The 4XG7A38076 is qualified for the Lenovo ThinkSystem SR650 rack server platform. Compatibility with a specific SR650 configuration depends on the server's firmware revision, existing processor socket population, and chassis thermal rating. Before deploying, cross-reference Lenovo's server compatibility matrices for your SR650 build — particularly if mixing processor generations within a dual-socket configuration, which is not supported on this platform. This processor pairs well with a qualified rack server build running surveillance or enterprise workloads. For environments running video management software, pairing with adequate network video recorder storage infrastructure and PoE network switching will determine overall system throughput, not CPU alone. Review your server memory configuration alongside this upgrade — the 6248R's six-channel DDR4 controller is bottlenecked if fewer than six DIMMs are populated per socket. See Lenovo's recommended server accessories for compatible heatsink options, since no cooler ships with this kit.

Frequently Asked Questions

Q: Does the Lenovo 4XG7A38076 include a heatsink or cooler?

A: No. The 4XG7A38076 does not include a cooler. You must source and install a compatible heatsink separately. Verify the cooler is rated for at least 205W TDP and is qualified for the ThinkSystem SR650 chassis.

Q: What server platform is the 4XG7A38076 designed for?

A: The 4XG7A38076 delivers an Intel Xeon Gold 6248R processor qualified for the Lenovo ThinkSystem SR650 platform. It uses the LGA 3647 (Socket P) socket and is part of the 2nd Generation Intel Xeon Scalable family.

Q: Can the 4XG7A38076 run in a dual-socket SR650 configuration?

A: The SR650 supports dual-socket configurations, but mixing processor models or generations across sockets is not supported. Both processors must be identical for a valid dual-socket deployment.

Q: How much memory does the Xeon Gold 6248R support?

A: The Intel Xeon Gold 6248R included in the 4XG7A38076 supports up to 1 TB of DDR4-SDRAM per socket. In a dual-socket SR650, total addressable memory can reach 2 TB.

Q: What is the TDP of the processor in the 4XG7A38076, and does it affect cooling requirements?

A: The Xeon Gold 6248R has a 205W TDP. This is at the upper end of the SR650 thermal envelope. Confirm your chassis cooling configuration — fan topology and airflow — supports 205W before installing. Insufficient cooling will cause thermal throttling.

Q: Is the 4XG7A38076 compatible with first-generation Xeon Scalable (Skylake-SP) SR650 builds?

A: The 4XG7A38076 is a 2nd Generation Xeon Scalable (Cascade Lake) part. While both generations share the LGA 3647 socket, mixing generations in a dual-socket configuration is not supported, and firmware must support 2nd Gen Scalable. Verify your SR650 firmware revision before installing.

Karl Wilson

The 4XG7A38076 is a processor upgrade I'd consider specifically when an SR650 deployment is hitting CPU saturation on analytics or VMS workloads — the Xeon Gold 6248R's 24 cores at 3 GHz base give you genuine sustained throughput, not just burst headroom. The 4 GHz Turbo ceiling is a secondary benefit; what matters in 24/7 surveillance server operation is the floor, not the peak.

Technical Highlights:

• 24C/48T at 3 GHz Base: Sustained base clock matters more than Turbo in always-on VMS environments. 48 hardware threads give the OS enough runway to keep recording, analytics, and management plane tasks isolated without scheduling collisions.
• 35.75 MB L3 Cache: Larger L3 reduces DDR4 bus pressure significantly on workloads with moderate working-set sizes — analytics inference loops and database-backed event indexing both benefit. Less memory contention means more predictable frame processing latency.
• 1 TB DDR4 per Socket: The 6248R's six-channel memory controller supports up to 1 TB per socket. Populate all six channels to avoid starving the processor — running fewer DIMMs cuts effective memory bandwidth in half and negates much of the core-count advantage.

Deployment Considerations:

• The 205W TDP is non-trivial — confirm your SR650's active cooling configuration (fan count and airflow path) before dropping this in. A standard low-profile cooler rated for 150W will throttle this processor under sustained load.
• No cooler ships with the 4XG7A38076. Budget and procure a Lenovo-qualified 205W heatsink as part of the same order. Installing without the correct cooler voids the upgrade's reliability case entirely.

This processor upgrade is the right call for SR650 builds acting as dedicated VMS servers running 32+ camera streams with software-based analytics — scenarios where the previous processor's core count is the bottleneck, not storage I/O or network throughput.