Lenovo 4H47A86395 SR655 V3 HP Heatsink

Lenovo 4H47A86395 SR655 V3 HP Heatsink

Overview

The Lenovo 4H47A86395 is the High Performance (HP) heatsink option for the ThinkSystem SR655 V3 server platform. When your SR655 V3 configuration calls for higher TDP processor support or dense rack deployments where airflow headroom is tighter than a standard heatsink allows, this is the component to specify. At 10 lb, the 4H47A86395 is a substantial thermal assembly — consistent with the large copper-fin and high-mass designs Lenovo uses in HP-class server heatsinks to maintain junction temperatures under sustained compute workloads.

Sourced factory-new from Lenovo server components, this is a genuine replacement and upgrade part for the SR655 V3 chassis. It is not a universal fit — verify your SR655 V3 processor TDP and chassis configuration against Lenovo's compatibility matrix before ordering.

Key Features

• HP (High Performance) Thermal Rating: Designed to support higher TDP processor configurations in the SR655 V3 that exceed the thermal ceiling of the standard heatsink — critical if you are populating high-core-count or high-frequency AMD EPYC processors.
• 10 lb Assembly Weight: The substantial mass (10.00 lb) reflects the copper-fin construction typical of HP-class heatsinks, which provides the thermal mass needed to buffer sudden workload spikes without letting junction temps spike alongside them.
• Platform-Specific Fit: Engineered for the Lenovo ThinkSystem SR655 V3 chassis geometry. Mounting points, fin orientation, and airflow direction are matched to the SR655 V3 fan wall — do not attempt to cross-fit into SR655 Gen1/Gen2 or other ThinkSystem platforms without Lenovo compatibility confirmation.
• UNSPSC 43201538: Classified under computer cooling and thermal management hardware — supports procurement, asset tagging, and ERP categorization workflows without manual re-classification.
• Country of Origin — Mexico: Manufactured in Mexico under Lenovo's production standards, relevant for procurement teams with TAA or country-of-origin tracking requirements.

Integration & Compatibility

The 4H47A86395 is a direct Lenovo-sourced component for the SR655 V3. Before purchasing, confirm the target processor's TDP against Lenovo's SR655 V3 server component compatibility guide. HP heatsinks are typically required when configuring processors above a defined TDP threshold — installing the standard heatsink under an HP-rated processor will result in thermal throttling or system shutdown. If your SR655 V3 is running standard TDP processors, the HP heatsink is not required and adds unnecessary mass and potential airflow restriction depending on chassis configuration.

Frequently Asked Questions

Q: What server platform is the Lenovo 4H47A86395 compatible with?

A: The 4H47A86395 is designed for the Lenovo ThinkSystem SR655 V3. It is not confirmed compatible with earlier SR655 generations or other ThinkSystem platforms — verify against Lenovo's official compatibility matrix before ordering.

Q: What does 'HP' mean in SR655 V3 HP Heatsink?

A: 'HP' stands for High Performance. This heatsink variant is specified for processor configurations with higher TDP requirements that exceed the thermal capacity of the standard SR655 V3 heatsink.

Q: How much does the 4H47A86395 weigh?

A: The 4H47A86395 weighs 10.00 lb. This weight reflects the high-mass thermal assembly construction used in HP-class server heatsinks.

Q: Where is the Lenovo 4H47A86395 manufactured?

A: The 4H47A86395 is manufactured in Mexico (Country of Origin: MX), as indicated in the product's distribution data.

Q: Do I need the HP heatsink if my SR655 V3 uses standard TDP processors?

A: No. The HP heatsink is required only for processor configurations that exceed the standard heatsink's thermal rating. For standard TDP processors, the included heatsink is sufficient — verify your specific processor's TDP against Lenovo's SR655 V3 thermal configuration guide.

Karl Wilson

The 4H47A86395 is one of those parts that gets overlooked until it isn't — if you are speccing an SR655 V3 with high-core-count EPYC processors and you ship it with the standard heatsink, the system will throttle under sustained load. The 10 lb weight of this HP heatsink tells you what you need to know about the thermal mass Lenovo built into it for exactly that scenario.

Technical Highlights:

• HP Thermal Class: Required for SR655 V3 configurations where processor TDP exceeds the standard heatsink rating — the difference between sustained full-clock performance and thermal throttling under extended workload.
• 10.00 lb Mass: High-mass heatsink construction buffers transient thermal spikes — relevant in AI inference or HPC workloads where compute threads spike simultaneously across all cores.
• Mexico Origin (MX): Relevant for procurement workflows requiring country-of-origin documentation; classifies cleanly under UNSPSC 43201538 for asset management and ERP integration.

Deployment Considerations:

• Confirm processor TDP against Lenovo's SR655 V3 thermal matrix before ordering — the HP heatsink is not a universal upgrade and is only warranted when the processor requires it.
• At 10 lb, verify chassis rail and motherboard mounting torque specs before installation — improper seating on a high-mass heatsink can stress the socket retention mechanism.

Best fit: SR655 V3 deployments running high-TDP AMD EPYC processors in dense rack configurations where sustained full-load thermal headroom is a design requirement, not an afterthought.