Lenovo 4X67A89305 SR650 V3 Air Baffle EX16X16 with SW GPU

Overview

The Lenovo 4X67A89305 is an air baffle designed for the ThinkSystem SR650 V3 server chassis, specifically for deployments using the EX16X16 riser configuration with a supported software-defined GPU option. Air baffles in rack servers are not optional cosmetic hardware — they are engineered airflow directors that ensure cooling air moves across the right components in the right sequence. Installing a GPU or riser configuration without the correct baffle defeats the chassis thermal design and can trigger throttling or hardware faults. This part weighs 10.00 lb and is manufactured in Mexico.

The SR650 V3 is Lenovo's 2U two-socket server platform built around the Intel Xeon Scalable (Sapphire Rapids) architecture. The EX16X16 designation refers to the PCIe slot configuration on the riser — two x16 Gen 5 slots — a layout typically used when pairing compute-intensive workloads with discrete GPU or accelerator cards. The 4X67A89305 baffle is the thermally-matched component Lenovo specifies for this exact slot and GPU combination; substituting a generic or mismatched baffle will leave airflow gaps that the chassis fan zones cannot compensate for.

Key Features

• Chassis-matched airflow geometry: Engineered specifically for the SR650 V3 chassis with EX16X16 riser installed — correct baffle placement is what allows the server's fan controller to maintain target component temperatures under GPU load.
• SW GPU compatibility: Paired with software-defined GPU configurations, this baffle ensures the thermal envelope remains within Lenovo's validated parameters for that card class — critical for sustained compute workloads.
• Factory-new genuine component: Sourced as a genuine Lenovo option part, not an aftermarket substitute. Baffle geometry tolerances matter; off-spec parts create airflow leakage paths the chassis design does not account for.
• 10.00 lb shipping weight: Consistent with a full chassis baffle assembly rather than a trim piece — plan for this in rack build logistics if ordering alongside other SR650 V3 option parts.

Integration and Compatibility

The 4X67A89305 is validated for the Lenovo ThinkSystem SR650 V3 server platform. Before ordering, confirm your chassis riser configuration matches the EX16X16 layout and that your GPU or accelerator card is in the SW GPU class this baffle supports. Lenovo's ServerProven and the SR650 V3 product guide (available from Lenovo's support site) list the exact option-part-to-configuration mapping. Ordering the wrong baffle for a different riser or GPU class is a common mis-ship on SR650 V3 builds — verify the riser part number installed in your chassis against Lenovo's configurator before placing the order.

Frequently Asked Questions

Q: What server is the Lenovo 4X67A89305 compatible with?

A: The 4X67A89305 is designed for the Lenovo ThinkSystem SR650 V3 server chassis, specifically configurations using the EX16X16 riser with a SW GPU option.

Q: Is an air baffle required when installing a GPU in the SR650 V3?

A: Yes. Lenovo's thermal validation for the SR650 V3 requires the correct chassis-matched baffle for each riser and GPU configuration. Operating without the specified baffle can result in thermal throttling or hardware alerts.

Q: Will this baffle work with a different riser configuration on the SR650 V3?

A: No. The 4X67A89305 is matched to the EX16X16 riser configuration with SW GPU. Different riser layouts require their own specific baffle part numbers. Verify your riser configuration before ordering.

Q: What is the weight of the 4X67A89305?

A: The 4X67A89305 has a listed weight of 10.00 lb.

Marty Allison

The 4X67A89305 is one of those parts that gets overlooked until a build goes wrong. At 10.00 lb, this is a full chassis baffle assembly — not a trim clip — and it exists because the SR650 V3 thermal design is validated per-configuration. Skip it or substitute a wrong-config baffle on your EX16X16 GPU build and you will fight fan zone alerts and potential throttling under sustained GPU load.

Technical Highlights:

• Configuration-specific fit: Matched to the EX16X16 riser with SW GPU — the baffle geometry is not interchangeable across SR650 V3 riser configurations; each layout has its own validated part.
• Thermal integrity: Lenovo's fan controller relies on baffles to route airflow predictably; a missing or mismatched baffle creates dead zones that sensor-based fan speed control cannot detect or compensate for.
• Genuine factory component: At 10.00 lb, the weight is consistent with a full-span baffle assembly — aftermarket substitutes frequently differ in depth or duct geometry, which matters in a dense 2U chassis.

Deployment Considerations:

• Before ordering, pull the riser part number from your SR650 V3 chassis and cross-reference against Lenovo's SR650 V3 option compatibility matrix — EX16X16 configurations vary by chassis revision and the wrong baffle will not seat correctly.
• This part ships at 10.00 lb; if you are ordering alongside rails, risers, or drive backplanes for the same build, consolidate shipments — SR650 V3 option parts add up fast in rack deployments.

Best fit for SR650 V3 deployments where the EX16X16 riser is being populated with a SW GPU — AI inferencing nodes, HPC edge racks, or dense virtualization hosts where sustained GPU thermals are a design constraint rather than an afterthought.