Lenovo 4XG7B03705 SR650/A V4 6515P 16C 150W 2.3GHZ

Lenovo 4XG7B03705 Intel Xeon 6515P 16-Core Server Processor Option

The Lenovo 4XG7B03705 is a factory-configured processor option kit pairing the Intel Xeon 6515P — a 16-core, 32-thread Xeon 6 (Granite Rapids) CPU running at a 2.3 GHz base and boosting to 3.8 GHz — with the ThinkSystem SR650 V4 server platform. If your workload is video analytics, NVR back-end processing, or any compute-intensive security infrastructure task that demands both high core density and memory bandwidth, this is the processor tier worth evaluating against lighter alternatives in the same family.

Overview

The Xeon 6515P sits in Lenovo's SR650 V4 server processor options, targeting workloads that need a meaningful thread count without crossing into the extreme-TDP territory of higher-tier SKUs. At 150W TDP on an LGA 4710 socket, it draws enough power to demand proper thermal planning — and notably, no cooler is included in the 4XG7B03705 kit, so factor that into your BOM before ordering. With 72MB of L3 cache and support for up to 4TB of DDR5 ECC memory across eight channels, this CPU is well-positioned for security platforms running parallel analytics streams, multi-camera NVR workloads, or AI-assisted inference at the edge-to-core boundary.

Key Features

• 16 Cores / 32 Threads at 2.3–3.8 GHz: The 6515P's 16-core, 32-thread layout provides enough parallelism to handle dozens of simultaneous video analytics tasks. Base clock at 2.3 GHz keeps sustained multi-core workloads efficient; the 3.8 GHz boost handles latency-sensitive single-threaded processes like VMS event indexing without a separate management CPU.
• 72MB L3 Cache: A 72MB L3 cache is substantial for a 16-core processor — it keeps frequently accessed frame data, motion-detection models, and codec tables resident without hitting main memory. In practice, this reduces latency on high-channel-count NVR platforms where random-access patterns dominate.
• DDR5-6400 Octa-Channel ECC Support up to 4TB: Eight memory channels running DDR5-6400 deliver the memory bandwidth that AI-accelerated video analytics demands. ECC support is non-negotiable in always-on surveillance infrastructure — single-bit errors corrected silently rather than triggering crashes or corrupted recording segments. The 4TB maximum memory ceiling gives platform architects room to scale well beyond current workloads.
• Intel Xeon 6 (Granite Rapids) Architecture: The Xeon 6 generation brings improved per-core performance-per-watt versus prior generations, which matters in dense rack environments where cooling and power budgets are constrained. For rackmount server deployments running 24/7, efficiency gains compound over a multi-year operating cycle.
• 64-bit Operating Mode: Full 64-bit support is table stakes for any modern server workload, but it also confirms compatibility with current Linux and Windows Server distributions used by leading VMS platforms — no 32-bit OS compatibility concerns on this CPU.
• LGA 4710 Socket: The LGA 4710 socket is the platform anchor for Lenovo's ThinkSystem SR650 V4. If you're evaluating processor upgrade paths within the SR650 V4 chassis, socket compatibility is the first constraint — this processor fits; verify your specific SR650 V4 board revision against Lenovo's compatibility matrix before ordering a different Xeon 6 variant.
• 150W TDP — No Cooler Included: At 150W, thermal dissipation is a real design consideration. The 4XG7B03705 does not ship with a heatsink or cooler. If you're adding this processor to an existing SR650 V4 that already has a cooling assembly configured for a lower-TDP SKU, verify that the installed heatsink is rated for 150W before commissioning. Lenovo's platform configurator identifies the correct thermal option by TDP tier.

Integration & Compatibility

This processor option is designed specifically for the Lenovo ThinkSystem SR650 and SR650 V4 server platforms. The LGA 4710 socket is not shared across broader x86 server lines — this is a Lenovo-platform-specific part. Confirm compatibility with your SR650 V4 board revision and BIOS version via Lenovo's ServerProven compatibility database before deployment. For organizations building out server processor upgrades within an existing ThinkSystem infrastructure, the 4XG7B03705 integrates into Lenovo's XClarity management framework for firmware lifecycle management and health monitoring.

Memory compatibility follows Intel Xeon 6 (Granite Rapids) DDR5 specifications — DDR5-6400 RDIMMs in an octa-channel configuration deliver peak bandwidth. Populate all eight channels symmetrically for full bandwidth; asymmetric populations reduce effective bandwidth and impact analytics-heavy workloads disproportionately. ECC DIMMs are required for server-grade operation. Consult Lenovo's server memory compatibility guide for validated DIMM options paired with this processor on the SR650 V4 platform.

Frequently Asked Questions

Q: Does the Lenovo 4XG7B03705 include a heatsink or cooler?

A: No. The 4XG7B03705 processor kit does not include a cooler. You must order the appropriate Lenovo heatsink rated for a 150W TDP processor separately. Verify the correct thermal option in Lenovo's SR650 V4 configuration guide before purchasing.

Q: What server platforms is the 4XG7B03705 compatible with?

A: The 4XG7B03705 is designed for the Lenovo ThinkSystem SR650 and SR650 V4 server platforms. The LGA 4710 socket is specific to these platforms. Confirm board revision and BIOS compatibility via Lenovo's ServerProven database before ordering.

Q: What memory type does the Intel Xeon 6515P support?

A: The Xeon 6515P supports DDR5-6400 ECC memory in an octa-channel configuration, with a maximum of 4TB of total system memory. ECC DIMMs are required for server-class operation. Populate all eight channels for full bandwidth.

Q: What is the boost clock speed of the Xeon 6515P in the 4XG7B03705?

A: The Intel Xeon 6515P has a 2.3 GHz base clock and boosts up to 3.8 GHz, with 16 cores and 32 threads supported across a 150W TDP envelope.

Q: Is ECC memory required for the 4XG7B03705?

A: Yes. The Intel Xeon 6515P supports and requires ECC DDR5 memory for server operation, which provides error-correcting capability that silently corrects single-bit memory errors — critical for always-on infrastructure like NVR platforms and video analytics servers.

Ted Perry

The 4XG7B03705 is the kind of processor option I'd specify when a customer needs to push 64+ simultaneous analytics streams through an SR650 V4 without stepping up to a higher-TDP part. The Xeon 6515P's 72MB L3 cache is the detail that often gets overlooked — on an NVR or analytics server where dozens of decode pipelines are pulling frame data in parallel, keeping that working set in cache versus hitting DDR5 main memory can meaningfully reduce per-stream latency.

Technical Highlights:

• 72MB L3 Cache: Keeps concurrent analytics workloads — motion detection models, codec tables, metadata indexing — resident without DDR5 round-trips, reducing decode pipeline latency under sustained multi-stream load.
• DDR5-6400 Octa-Channel, up to 4TB ECC: Eight memory channels at 6400 MHz deliver the bandwidth AI-accelerated inference needs; the 4TB ceiling leaves ample headroom for in-memory buffering on high-channel-count NVR deployments. ECC silently corrects single-bit errors — no corrupted recording segments from transient memory faults.
• 3.8 GHz Boost at 150W TDP: The 2.3 GHz base keeps sustained multi-core power manageable; the 3.8 GHz boost handles event-driven single-threaded spikes — VMS alarm processing, live view rendering — without a separate CPU tier.

Deployment Considerations:

• No cooler ships with the 4XG7B03705 — confirm the SR650 V4 thermal kit installed in your chassis is rated for 150W before commissioning. A heatsink sized for a lower-TDP predecessor will not safely dissipate this processor's heat at sustained load.
• Populate all eight DDR5 channels symmetrically. Asymmetric DIMM population reduces effective memory bandwidth and can bottleneck analytics-heavy workloads disproportionately — the CPU's bandwidth advantage is only realized with a full 8-channel configuration.

This processor option is a strong fit for dense security analytics deployments — specifically SR650 V4-based NVR clusters or AI inference nodes running parallel video analytics pipelines where both thread count and memory bandwidth are active bottlenecks at scale.