Lenovo 4H47A38666 SR650 V2 GPU Full Length Thermal KIT

Lenovo 4H47A38666 SR650 V2 GPU Full Length Thermal Kit

Overview

The Lenovo 4H47A38666 is a full-length GPU thermal kit designed for ThinkSystem SR650 V2 rack servers running high-TDP GPU accelerator cards. Without proper thermal management hardware, full-length GPUs in dense 2U chassis generate hotspots that throttle compute performance and shorten component lifespan — this kit provides the physical thermal interface and airflow-management hardware to keep GPU workloads running at rated speeds. If you're adding or swapping a full-length GPU into an SR650 V2 and the GPU thermal kit isn't already installed, this is the required part before the card goes in.

Compatibility

Designed specifically for the Lenovo ThinkSystem SR650 V2 2U rack server. This kit is chassis-generation specific — it is not interchangeable with SR650 (Gen 1), SR650 V3, or other ThinkSystem platforms such as the SR630 or SR850 series. Verify your exact server model and GPU card length before ordering; Lenovo's thermal kits are matched to specific GPU form factors (full-length vs. half-length), and installing a mismatched kit will prevent proper airflow ducting. Consult the SR650 V2 server hardware documentation or the GPU option compatibility matrix to confirm the correct thermal option number for your specific GPU card.

Installation Notes

At 7.45 lb and 13.20 x 19.70 x 7.40 in, this kit ships as a complete thermal assembly. Installation requires the SR650 V2 chassis to be powered down and the GPU riser cage removed before the thermal hardware can be seated. Follow Lenovo's GPU installation procedure in the SR650 V2 Hardware Maintenance Guide — thermal interface materials and torque sequences are specified there and must not be skipped. No special tools beyond standard ESD-safe service equipment are required, but GPU thermal kits should be treated as single-use assemblies; do not reuse thermal interface pads once compressed.