Lenovo 4H47A85858 Thinksystem SR665 V3 2U High Perf Heatsink

Lenovo 4H47A85858 ThinkSystem SR665 V3 2U High Performance Heatsink

Overview

The Lenovo 4H47A85858 is a high-performance heatsink engineered specifically for the ThinkSystem SR665 V3 2U rack server platform. When your SR665 V3 configuration calls for elevated processor TDP headroom — high-core-count EPYC configurations running sustained compute workloads — the standard heatsink may not deliver sufficient thermal dissipation. The 4H47A85858 is the factory-designated solution for those thermal demands, supplied as a discrete component so integrators can configure or retrofit SR665 V3 nodes to the correct thermal class without replacing the entire system board assembly. At 2.00 lb, it fits within the 2U chassis envelope without disrupting adjacent component clearances in dense rack configurations. Manufactured in Mexico and distributed through established commercial channels, this is a genuine factory-new component — not a grey-market or parallel-import part. For teams building out Lenovo ThinkSystem server infrastructure or expanding existing SR665 V3 clusters, sourcing the correct heatsink variant from the start avoids the cost and downtime of a mid-deployment thermal remediation.

Key Features

• 2U Rack Form Factor: Designed to fit within the SR665 V3 2U chassis height — installs without requiring additional rack units or chassis modifications, which matters in high-density deployments where U-space is a real constraint.
• High-Performance Thermal Class: Designated for configurations where the standard heatsink is insufficient — typically higher-TDP processor options or workloads running sustained all-core loads. Selecting the wrong heatsink class for a high-TDP EPYC SKU will trigger thermal throttling under load, degrading the compute performance you paid for.
• 2.00 lb Verified Weight: Known shipping weight simplifies rack weight budgeting for integrators managing floor load limits in dense server deployments.
• Factory-New Genuine Component: Sourced direct from the manufacturer supply chain — no refurbished, pulled, or parallel-import parts. Critical for warranty continuity on ThinkSystem platforms, where Lenovo's service contracts can require genuine factory components.
• UNSPSC 43201538: Correctly classified under the universal product taxonomy for computer server cooling components, which simplifies procurement through e-procurement and ERP systems that require UNSPSC coding for PO matching and asset categorization.

Integration & Compatibility

The 4H47A85858 is specified for the ThinkSystem SR665 V3 2U server platform. Before ordering, verify the processor TDP and Lenovo's configuration rules for the SR665 V3 — Lenovo's ServerProven and system configuration guides define which heatsink part number is required for each processor option. Installing a high-performance heatsink in a configuration that specifies the standard variant is generally safe, but the reverse is not: a standard heatsink on a high-TDP processor will result in thermal throttling. If you are building a rack server bill of materials from scratch, cross-reference the SR665 V3 product guide to confirm heatsink selection alongside processor, memory, and power supply choices. For data center teams managing server thermal management at scale, keeping a spare 4H47A85858 on hand reduces mean time to repair when a heatsink failure or configuration change requires a swap.

Frequently Asked Questions

Q: Which server platform is the Lenovo 4H47A85858 heatsink compatible with?

A: The 4H47A85858 is designed for the Lenovo ThinkSystem SR665 V3 2U rack server. Verify compatibility with your specific processor configuration using Lenovo's SR665 V3 product guide before ordering.

Q: What is the difference between the standard and high-performance heatsink for the SR665 V3?

A: The high-performance heatsink variant (4H47A85858) is intended for higher-TDP processor configurations or sustained all-core workloads where the standard heatsink cannot maintain adequate thermal headroom. Using the wrong thermal class for your processor TDP will result in CPU throttling under load.

Q: What does this heatsink weigh?

A: The 4H47A85858 weighs 2.00 lb. This is useful for rack weight planning in high-density deployments.

Q: Where is the Lenovo 4H47A85858 manufactured?

A: The 4H47A85858 is manufactured in Mexico.

Q: Is this a genuine factory-new component?

A: Yes. This component is sourced through established commercial distribution channels as a factory-new, genuine Lenovo part — not refurbished, pulled, or a parallel import.

Jerry Tildsen

The 4H47A85858 is one of those components that gets overlooked during initial BOM planning and then becomes urgent the moment a high-TDP EPYC configuration starts throttling under production load. At 2.00 lb within a 2U chassis envelope, it is the factory-designated thermal solution for SR665 V3 nodes running processors that exceed the standard heatsink's dissipation capacity — and getting this selection wrong at deployment time means a service call and server downtime to correct it.

Technical Highlights:

• 2U Form Factor Fit: The 2U chassis constraint is non-negotiable on SR665 V3 deployments — this heatsink is sized to install within that envelope without requiring chassis modification or adjacent component relocation.
• Verified 2.00 lb Component Weight: Precision weight data matters when you are managing per-rack floor load budgets across a multi-rack deployment; knowing the exact weight of every component in the BOM removes guesswork from load calculations.
• Genuine Factory Component: For Lenovo ThinkSystem platforms with active service contracts, using genuine factory parts maintains warranty and service agreement continuity — a pulled or third-party heatsink risks voiding coverage on a high-value server asset.

Deployment Considerations:

• Always cross-reference the SR665 V3 processor configuration guide before ordering — Lenovo specifies which heatsink part number is required for each processor TDP tier, and ordering the wrong variant means a return and delay.
• Evidence for this component is limited to distribution feed attributes. Before finalizing a configuration, confirm thermal class requirements directly against Lenovo's SR665 V3 product guide or contact Lenovo pre-sales engineering for processor-specific heatsink validation.

The 4H47A85858 is the right procurement target for data center teams configuring or retrofitting SR665 V3 nodes with high-core-count, high-TDP EPYC processors in HPC, AI inference, or dense virtualization deployments where sustained all-core thermal load is the design baseline.