Lenovo 4XH7B08885 SR850 V4 Full Length GPU Thermal Kit

Overview

The Lenovo 4XH7B08885 is a thermal management kit engineered for full-length GPU installations in the ThinkSystem SR850 V4 server platform. When deploying discrete, full-length GPUs in the SR850 V4, the standard chassis thermal configuration is not sufficient — this kit provides the supplemental heatsink and airflow hardware required to keep GPU junction temperatures within specification under sustained compute loads. Without it, GPU throttling or thermal shutdown can occur in dense workloads such as AI inference, data analytics, or GPU-accelerated virtualization.

Compatibility

Designed specifically for the Lenovo ThinkSystem SR850 V4 server. Verify your GPU selection against Lenovo's SR850 V4 GPU compatibility matrix before ordering — not all full-length GPU models install identically, and thermal kit requirements can differ by GPU TDP class. This kit is not interchangeable with thermal kits for SR850 V3 or other ThinkSystem 2U/4U platforms. Confirm your chassis generation and GPU option code before purchasing.

Installation Notes

This kit weighs 10.00 lb, so confirm your rack and rail assembly supports the cumulative weight of the SR850 V4 chassis plus installed GPU hardware. Country of origin is MX. Installation should follow the SR850 V4 hardware maintenance guide — GPU thermal kits in high-density servers typically require specific torque and seating sequences to ensure proper contact with the GPU heatspreader. Do not substitute or omit components from the kit, as incomplete thermal assemblies can create uneven contact pressure and reduce cooling effectiveness.