Lenovo 4XG7A38077 SR650 Xeon Gold 6246R

Lenovo 4XG7A38077 Xeon Gold 6246R 16-Core Processor for ThinkSystem SR650

Overview

The Lenovo 4XG7A38077 is a 2nd Generation Intel Xeon Gold 6246R processor option for the ThinkSystem SR650 server platform — a 16-core, 32-thread compute module running at 3.4 GHz base with a 4.1 GHz Turbo Boost ceiling. If you're provisioning or expanding an SR650 for surveillance video management, analytics workloads, or enterprise compute tasks that demand high single-thread and multi-thread throughput simultaneously, this is the processor to evaluate. The Cascade Lake architecture and 14 nm lithography are mature, well-understood, and broadly supported across Lenovo's SR650 ecosystem of validated firmware and drivers.

Key Features

• 16 Cores / 32 Threads at 3.4 GHz Base: Running 32 concurrent threads means you can handle multi-stream VMS decoding, analytics inference, and OS overhead in parallel without the CPU becoming the bottleneck. The 3.4 GHz base is unusually high for a 16-core Xeon Gold — most comparable 16-core SKUs base at 2.9–3.2 GHz — which benefits single-threaded workloads like database queries and VMS codec licensing calculations.
• 4.1 GHz Turbo Boost: When lightly threaded workloads hit — configuration pushes, scheduled reports, VMS event processing — the processor scales to 4.1 GHz without any manual tuning. That headroom keeps interactive response times snappy even on a loaded server.
• 35.75 MB L3 Cache: The large L3 cache keeps frequently accessed data (active camera streams, analytics frame buffers, OS scheduling tables) close to the execution cores, reducing main memory latency on latency-sensitive surveillance and analytics workloads.
• 205 W TDP: This is a power-dense processor. At 205 W TDP, confirm your SR650 power supply configuration and chassis cooling can handle the load before committing — this is not a low-power efficiency part. The tradeoff is raw clock speed and core count that justify the thermal budget in compute-heavy deployments.
• LGA 3647 (Socket P) — SR650 Platform Lock-in: This processor is validated for the ThinkSystem SR650 socket and will not install in prior-generation or competing platforms. If you are ordering a spare or upgrade, verify your SR650 chassis generation before purchasing — the socket is correct but firmware compatibility matters.
• Up to 1 TB Maximum Memory: The 6246R supports up to 1 TB of RAM across the SR650's DIMM slots. That ceiling is relevant for in-memory analytics engines, large VMS databases, or hypervisor consolidation scenarios where memory oversubscription is a constraint.
• 2 UPI Links at Full Speed: Dual UPI (Ultra Path Interconnect) links provide high-bandwidth, low-latency CPU-to-CPU and CPU-to-I/O communication. In dual-socket SR650 configurations, this keeps NUMA cross-socket penalties manageable for multi-threaded workloads that span both processors.
• 64-bit Operating Mode, Cascade Lake Codename: Full 64-bit instruction set support with Intel's Cascade Lake microarchitecture means you get AVX-512 support — relevant if your analytics software (deep learning inference, video transcoding acceleration) is compiled to take advantage of vector extensions.

Integration and Compatibility

The 4XG7A38077 is a Lenovo factory option for the Lenovo ThinkSystem server line, specifically validated for the SR650 platform. Before deploying, cross-reference Lenovo's ServerProven compatibility list to confirm the specific SR650 chassis revision, BIOS version, and co-installed processor (in dual-socket configurations) are on the validated matrix. Mixing Xeon processor generations or stepping levels in a dual-socket SR650 is not supported.

For workloads running network video recorder software or large-scale VMS platforms, the 6246R's high base clock and large cache make it well-suited to concurrent stream decoding. Pair with adequate network switching infrastructure to avoid creating a network bottleneck that the CPU headroom never gets to fill. If you are building out a full surveillance server stack, review our storage options to match IOPS capacity to the number of camera streams the SR650 will record simultaneously.

Cooler is not included with the 4XG7A38077 — the Lenovo SR650 chassis provides its own thermal solution. This is standard for server CPU option kits; do not order a third-party cooler expecting compatibility.

Frequently Asked Questions

Q: Does the 4XG7A38077 include a CPU cooler?

A: No. The Lenovo 4XG7A38077 does not include a cooler. The ThinkSystem SR650 chassis provides integrated server cooling; a separate consumer or rack cooler is not required or compatible.

Q: What server platform is the 4XG7A38077 compatible with?

A: The 4XG7A38077 is a processor option validated for the Lenovo ThinkSystem SR650. It uses LGA 3647 (Socket P) and is not cross-compatible with other server platforms. Always verify against Lenovo's ServerProven list for your specific SR650 chassis revision.

Q: What is the base and boost clock speed of the Xeon Gold 6246R?

A: The Intel Xeon Gold 6246R in the 4XG7A38077 runs at 3.4 GHz base frequency with a maximum Turbo Boost of 4.1 GHz.

Q: How many cores and threads does this processor provide?

A: The Xeon Gold 6246R delivers 16 physical cores with Hyper-Threading enabled for 32 total threads, supporting 64-bit operating modes.

Q: What is the TDP and what does that mean for power planning?

A: The Thermal Design Power is 205 W. This is a high-performance, power-dense processor. Confirm your SR650 power supply tier and data center power allocation before deploying — budget at least 205 W per socket for this CPU alone, plus memory, storage, and NIC draw.

Q: Can this processor be used in a dual-socket SR650 configuration?

A: The SR650 supports dual-socket configurations using LGA 3647. Two UPI links on the 6246R support CPU-to-CPU interconnect. Both sockets must use matched processors; verify Lenovo's co-processor validation matrix before ordering a second unit.

Jerry Tildsen

When I spec server CPU upgrades for high-density surveillance or analytics deployments, the 4XG7A38077's 3.4 GHz base clock is the detail that stands out — most 16-core Xeon Golds in this tier start at 2.9 GHz, so the 6246R gives you a meaningful single-thread performance advantage without sacrificing core count. That matters when your VMS is doing a mix of high-thread stream decoding and occasional single-thread-heavy operations like report generation or event indexing.

Technical Highlights:

• 3.4 GHz / 4.1 GHz Clock Range: The 500 MHz gap between base and boost is tight compared to efficiency-focused Xeon SKUs, which means sustained multi-threaded performance stays closer to peak — useful when all 32 threads are loaded simultaneously by a VMS with dozens of 4K streams.
• 35.75 MB L3 Cache: A large cache reduces round-trips to DDR4 for frequently accessed stream data. In practice, this translates to lower average memory latency under continuous recording workloads, which keeps codec pipeline throughput consistent.
• 1 TB Max Memory Ceiling: The 6246R's 1 TB memory ceiling gives the SR650 platform headroom for large in-memory analytics databases or hypervisor configurations consolidating multiple VMS instances — you won't hit a memory wall on a single socket before running out of DIMM slots.

Deployment Considerations:

• At 205 W TDP, this CPU requires a fully configured SR650 power supply tier. Verify your SR650 chassis power supply units are rated for dual high-TDP processors if deploying in a 2S configuration — undersized PSUs will trigger power capping and reduce clock performance under load.
• Cooler is not included; do not assume standard SR650 heatsinks carry over from lower-TDP Xeon options — confirm the correct heatsink part number from Lenovo's SR650 configuration guide for the 205 W thermal envelope.

This processor is the right call for SR650 deployments running compute-intensive VMS platforms with concurrent 4K decoding, deep learning analytics, or dual-socket configurations where NUMA-aware software can distribute workloads across both CPUs and take full advantage of the dual UPI links.