Lenovo 4XG7A90289 Thinksystem SR665 V3 AMD Epyc 9754 128C 360W 2.25GHZ Processor W/o FAN

Lenovo 4XG7A90289 AMD EPYC 9754 128-Core 2.25GHz ThinkSystem SR665 V3 Processor

Overview

The Lenovo 4XG7A90289 is an AMD EPYC 9754 processor option kit for the ThinkSystem SR665 V3 platform — a 128-core, 256-thread chip running at 2.25GHz base with a 3.1GHz boost frequency. At 360W TDP and Socket SP5, this is purpose-built for data-intensive server workloads: large-scale virtualization stacks, HPC clusters, AI inference pipelines, and high-density compute environments where core count and memory throughput are the binding constraints. The processor ships without a fan, so thermal planning is part of the install — ensure your SR665 V3 chassis is configured with the appropriate cooling solution before deployment.

This is a Lenovo OEM processor option, sourced through the Lenovo server and compute catalog and validated for the SR665 V3 platform. It belongs to AMD's EPYC 9004 Series for Server, which means it runs on the current SP5 socket ecosystem — not interchangeable with SP3-generation EPYC boards.

Key Features

• 128 Cores / 256 Threads: At 128 physical cores, this processor handles massive thread-parallel workloads — think 500+ VM guests, large Kubernetes node pools, or parallel simulation jobs — without the overhead of a dual-socket configuration. 256 threads mean OS schedulers see twice the logical processors, which matters for thread-hungry database engines and container orchestration platforms.
• 2.25GHz Base / 3.1GHz Boost: The 2.25GHz base keeps per-thread efficiency high on sustained workloads. The 3.1GHz boost applies where thread count is lower and frequency headroom matters — useful for latency-sensitive application tiers running alongside bulk compute jobs on the same host.
• 256MB L3 Cache: A 256MB L3 cache cuts memory latency significantly for working sets that fit in-cache — relevant for in-memory databases, analytics engines, and security workloads processing high-volume event streams. Fewer cache misses means less time stalled waiting on DRAM.
• 460.8 GB/s Memory Bandwidth: Dodeca-channel DDR5 delivering 460.8 GB/s aggregate bandwidth is the spec that separates this class of processor from mid-tier compute. For surveillance analytics, video transcoding pipelines, or storage-intensive NVR backends, bandwidth saturation is often the real bottleneck — this headroom keeps it from being the limiter.
• DDR5-4800 Support, Dodeca-Channel: Twelve memory channels running DDR5 at 4800MHz gives you both the capacity and the bandwidth to populate large memory configurations without throttling throughput. Plan memory population carefully — leaving channels partially filled drops bandwidth materially.
• AMD EPYC 9004 Series / Socket SP5: The SP5 socket ecosystem is AMD's current-generation server platform, with a clear roadmap and broad ecosystem support across hypervisors, Linux distributions, and server management stacks. Migrating from SP3? The socket is incompatible — this is a platform upgrade, not a drop-in swap.
• 360W TDP: 360W is at the top of the EPYC 9004 TDP range. This translates directly to rack power budget and cooling requirements. Verify your SR665 V3 power supply configuration and data center PDU capacity before committing to a high-density node deployment with this processor.
• No Fan Included: This kit ships without a cooling fan. The SR665 V3 uses platform-specific fan modules — if your chassis doesn't already include the required thermal solution, order it separately. Do not assume the existing fan configuration from a lower-TDP processor option will be sufficient at 360W.

Integration and Compatibility

The 4XG7A90289 is validated exclusively for the ThinkSystem SR665 V3 server platform. It is not a generic OEM part — installation outside a Lenovo-validated configuration is unsupported. Before ordering, confirm your SR665 V3's firmware revision supports the EPYC 9754; Lenovo publishes compatibility matrices through its support portal. For enterprise server platforms requiring maximum core density in a 2U footprint, the SR665 V3 with dual 9754 processors delivers up to 256 physical cores per server — relevant for large NVR and video analytics backends where per-server compute density reduces rack count.

Memory configuration planning is non-trivial at this scale. With twelve DDR5 channels per processor, a dual-socket configuration supports 24 DIMMs per server. For guidance on pairing this processor with the right storage and networking stack, the server and storage category covers complementary infrastructure components. If you're sizing a rack for a high-density IP camera analytics deployment, consult pre-sales engineering to validate compute-to-camera ratios before committing to a node count.

Frequently Asked Questions

Q: Is the 4XG7A90289 compatible with any ThinkSystem server other than the SR665 V3?

A: No. The 4XG7A90289 is validated specifically for the Lenovo ThinkSystem SR665 V3. The AMD EPYC 9754 uses Socket SP5, which is not compatible with previous-generation Lenovo ThinkSystem platforms using Socket SP3. Verify compatibility with your exact chassis model and firmware revision before ordering.

Q: Does the 4XG7A90289 include a CPU cooler or fan?

A: No. The product name explicitly states