Noctua NH-D9 TR5-SP6 4U sTR5 CPU Cooler

Compact dual-tower CPU cooler | 4U Rack | ⚡ Max TDP: ~250 W

The ultimate silent solution for mini-servers and rackmounts. Noctua has completely redesigned the SecuFirm2 mounting system to meet the new pressure requirements of the sTR5 socket, while retaining the essential 4U format for rack environments.

Key Features

• 2 high-speed NF-A9 92mm fans, push/pull configuration
• Height: 145mm — compatible with standard 4U chassis
• 4 high-density heatpipes
• 70×56mm copper contact surface — full coverage of sTR5 IHS
• Airflow oriented parallel to the long side of the socket
• Pre-applied high-performance NT-H2 thermal paste
• Updated SecuFirm2 mounting system for sTR5/SP6

Highlights

• ✅ Quietest in the 4U rack category
• ✅ Noctua build quality — guaranteed long-term reliability
• ✅ Ideal for AI mini-servers in office or meeting room environments
• ✅ Zero leak risk — 100% air

Ideal for: AI Mini-server, silent 4U rack, 24 to 64 core configurations