Lenovo 4XG7A63457 SR650 V2 Gold 6338N 32C 185W 2.2GHZ

Lenovo 4XG7A63457 Intel Xeon Gold 6338N 32-Core Processor for ThinkSystem SR650 V2

Overview

The Lenovo 4XG7A63457 is a factory-configured Intel Xeon Gold 6338N processor option for the ThinkSystem SR650 V2 rack server — a 32-core, 64-thread 3rd Generation Intel Xeon Scalable part built around the LGA 4189 socket platform. At 2.2 GHz base with a 3.5 GHz boost ceiling and a 185W TDP, the 6338N is positioned as a throughput-optimized CPU for workloads that prioritize core count and memory bandwidth over raw single-thread speed. If you're provisioning SR650 V2 nodes for datacenter compute, virtualization hosts, or AI-edge inference clusters, this is a validated, platform-matched component — not a grey-market part pulled from a different OEM's bill of materials.

Lenovo's option kit model number structure matters here: 4XG7A63457 is the Lenovo-specific part number that ensures firmware compatibility, warranty alignment, and clean integration with Lenovo's XClarity provisioning stack. Substituting a tray processor from another channel may save dollars upfront but introduces compatibility risk at the BIOS and RAS feature level that shows up later — often at the worst possible time.

Key Features

• 32 Cores / 64 Threads at 2.2 GHz Base: The 6338N delivers 64 logical processors to the hypervisor — on VMware vSphere or Hyper-V, that translates to a dense vCPU pool from a single socket. In a dual-socket SR650 V2 configuration, you're provisioning 128 threads per chassis, which changes the economics of VM density per rack unit meaningfully for mid-scale virtualization deployments.
• 3.5 GHz Turbo Boost: The 1.3 GHz headroom from base to boost (2.2 → 3.5 GHz) means latency-sensitive single-threaded tasks — database query execution, real-time analytics, or video decode — can accelerate opportunistically without requiring separate bin-sorting or manual frequency pinning. The CPU's on-die controller manages this automatically based on active core count and thermal headroom.
• Asymmetric Core Architecture — 18 High-Priority + 14 Standard-Priority Cores: The 6338N implements Intel's hybrid priority core model: 18 cores run at a higher sustained frequency (2.4 GHz base) while the remaining 14 operate at 1.9 GHz. For workloads with mixed thread-priority profiles — common in containerized microservice environments where some pods are latency-critical and others are batch-mode — this internal differentiation can improve scheduling efficiency without software-level tuning.
• 48 MB Last-Level Cache: 48 MB of on-die cache at 32 cores works out to 1.5 MB per core, a ratio that keeps cache-bound workloads like in-memory databases and video analytics pipelines from saturating the memory bus on every access. Fewer DRAM round-trips per operation reduces effective latency under sustained load.
• 185W TDP — Plan Your Cooling Budget: 185W is not a passive-friendly number. In a dual-socket SR650 V2, you're looking at 370W of processor TDP alone before accounting for DIMMs, NVMe drives, and NICs. Verify your rack's per-U power allocation and ensure your PDU and UPS capacity accounts for the full node draw, not just the processor TDP. The SR650 V2 platform is rated to handle this, but the rack-level math needs to be confirmed before deployment.
• 10nm Fabrication / LGA 4189 Socket: The 10nm Ice Lake-SP node offers improved IPC versus the previous 14nm Cascade Lake generation — more work per clock cycle — which benefits workloads that don't scale linearly with core count. LGA 4189 is the Cooper Lake / Ice Lake-SP socket standard, so this processor is not forward-compatible with Sapphire Rapids (LGA 4677) platforms. Match your procurement to the SR650 V2 specifically.
• 3rd Generation Intel Xeon Scalable Platform: Ice Lake-SP supports PCIe 4.0 (doubling bandwidth versus PCIe 3.0 on Cascade Lake), DDR4-3200 memory, and Intel DL Boost (VNNI instructions) for INT8 inference acceleration. These platform-level capabilities are relevant if the SR650 V2 node will host GPU-adjacent AI inference workloads or NVMe-over-Fabrics storage.

Integration and Compatibility

The 4XG7A63457 is a validated Lenovo option part for the Lenovo ThinkSystem SR650 V2 server platform. It ships as a Lenovo-sourced component designed to integrate with Lenovo's XClarity Controller (XCC) and XClarity Administrator (LXCA) management stack. Compatibility with other SR650 V2 processor options in a dual-socket configuration should be confirmed against Lenovo's official configurator — mixed-bin dual-socket deployments require matching processor stepping in most cases.

For infrastructure teams deploying high-density switching or storage fabrics alongside compute nodes, the PCIe 4.0 lanes available on this platform support current-generation NVMe SSDs and 100GbE adapters at full bandwidth without the PCIe 3.0 bottleneck present in previous-generation SR650 configurations. Pair with appropriate rack PDUs and UPS units sized for the full chassis draw — the 185W TDP per socket demands careful power planning at the rack level.

Frequently Asked Questions

Q: What server platform is the Lenovo 4XG7A63457 compatible with?

A: The 4XG7A63457 is a validated processor option for the Lenovo ThinkSystem SR650 V2 rack server. It uses the LGA 4189 socket and is part of the 3rd Generation Intel Xeon Scalable (Ice Lake-SP) platform. It is not compatible with earlier SR650 V1 systems or next-generation Sapphire Rapids (LGA 4677) platforms.

Q: What is the base and boost clock frequency of the Xeon Gold 6338N in this kit?

A: The Intel Xeon Gold 6338N operates at 2.2 GHz base frequency with a turbo boost ceiling of 3.5 GHz. The processor also implements an asymmetric core model: 18 high-priority cores run at 2.4 GHz base, while 14 standard-priority cores run at 1.9 GHz base.

Q: What is the TDP of the 6338N, and does the SR650 V2 support it?

A: The Intel Xeon Gold 6338N carries a 185W Thermal Design Power rating. The ThinkSystem SR650 V2 is engineered to support this TDP class. However, rack-level power planning is required — in a dual-socket deployment, processor TDP alone reaches 370W before accounting for memory, storage, and I/O components.

Q: Does the 4XG7A63457 support PCIe 4.0?

A: Yes. As a 3rd Generation Intel Xeon Scalable (Ice Lake-SP) processor, the 6338N supports PCIe 4.0, which doubles the per-lane bandwidth versus the PCIe 3.0 available on previous-generation Cascade Lake processors. This is relevant for NVMe SSD arrays and high-speed network adapters that can saturate PCIe 3.0 links.

Q: How many cores and threads does the Lenovo 4XG7A63457 provide?

A: The Intel Xeon Gold 6338N delivers 32 physical cores and 64 threads via Intel Hyper-Threading. In a dual-socket SR650 V2 configuration with two of these processors, the system presents 128 logical processors to the operating system or hypervisor.

Q: What is the cache size on the 6338N processor?

A: The Intel Xeon Gold 6338N includes 48 MB of last-level cache, which equates to approximately 1.5 MB per core. This cache capacity benefits memory-intensive workloads such as in-memory databases, real-time analytics, and high-throughput video processing pipelines.

Karl Wilson

The 4XG7A63457 is a straightforward procurement decision when your bill of materials calls for a throughput-optimized 32-core processor in the SR650 V2 platform — the 6338N's 185W TDP and asymmetric core model are the two specs I'd want any integrator to understand before they sign off on a rack design.

Technical Highlights:

• Asymmetric Core Prioritization: 18 high-priority cores at 2.4 GHz base and 14 standard-priority cores at 1.9 GHz means the scheduler has built-in differentiation — relevant for mixed VDI/batch workloads where you don't want latency-sensitive sessions competing equally with background processing jobs.
• 48 MB L3 Cache at 32 Cores: At 1.5 MB per core, cache pressure stays manageable for analytics pipelines and in-memory database queries that would otherwise hammer DRAM bandwidth on cache-starved configurations. It's a meaningful differentiator versus lower-cache-density parts at similar core counts.
• 3.5 GHz Turbo Headroom: The 1.3 GHz gap between base and boost (2.2 → 3.5 GHz) gives single-threaded burst performance that matters for database query compilation and real-time event processing — workloads where raw core count doesn't help but clock speed does.

Deployment Considerations:

• The LGA 4189 socket is Ice Lake-SP / Cooper Lake only — this processor is not forward-compatible with Sapphire Rapids (LGA 4677) nodes. Confirm your SR650 V2 chassis revision before ordering if you're working with mixed-generation inventory.
• At 185W TDP, dual-socket SR650 V2 nodes draw roughly 370W in processor TDP alone. Factor in DIMM, NVMe, and PCIe adapter loads — a fully populated node can exceed 700W under load. PDU and UPS capacity planning is not optional here.

The 4XG7A63457 is the correct pull for SR650 V2 nodes provisioned as VMware vSphere hosts in mid-scale datacenter builds where VM density per chassis is the primary optimization target — 64 threads per socket, PCIe 4.0 fabric, and DDR4-3200 memory support make it a capable platform anchor for that specific workload profile.