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High performance heatsink kept CPU temperatures stable under load.
794947-B21
HP DL380 Gen9 High Perf Heatsink FIO Kit
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794947-B21
HP DL380 Gen9 High Perf Heatsink FIO Kit
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794947-B21 is a Liquid (AIO) cooling solution featuring 2 x 120mm fans and a 240mm radiator, compatible with Intel and AMD sockets, supports up to 200W+ TDP, operates at 21–30 dBA noise level, utilizes Dual Ball bearings, includes thermal paste, offers ARGB + Software Control lighting, and is designed for Gaming, Overclocking, and Server Cooling.
This high-performance cooler ensures efficient thermal management with precise PWM control for reliable operation and an attractive lighting setup that synchronizes with ASUS Aura Sync, making it a perfect addition to both enthusiast and professional builds.
794947-B21 price is is available on request. Get immediate quote.
Request bulk order quote for 794947-B21 for additional pricing. Browse the full Hpe Server Cooling Solutions series or explore all Hpe products.
In a financial services data center, IT teams install the 794947-B21 High Perf Heatsink FIO Kit on HP DL380 Gen9 servers running high-frequency trading applications. By maintaining CPU core temperatures below 75 °C under continuous sub-microsecond workloads, the kit eliminates thermal throttling, delivers consistent transaction times, and supports 99.99% uptime SLAs for algorithmic trading platforms.
A cloud service provider upgrades its HP DL380 Gen9 fleet with the 794947-B21 High Perf Heatsink FIO Kit to support high-density virtualization. Enhanced heat dissipation sustains Intel Turbo Boost frequencies across 24-core CPUs, enabling up to 30% more VMs per chassis. The result: improved rack-level performance, lower PUE (Power Usage Effectiveness), and reduced risk of thermal-induced shutdowns.
An AI research lab equips DL380 Gen9 servers with the 794947-B21 High Perf Heatsink FIO Kit to tackle compute-intensive deep learning workloads. By keeping processor temperatures stable under prolonged GPU-CPU co-processing, the kit ensures uninterrupted Turbo Boost operation, accelerating model training by up to 20% and reducing cooling infrastructure costs through optimized airflow.
To get the detailed certification, please go to the Compliance Center.
 794947-B21 |  789654-B21 |  779841-B21 |  BW974A |  820290-B21 | |
|---|---|---|---|---|---|
| Product Type | Cooling Solution | Cooling Solution | Cooling Solution | Cooling Solution | Cooling Solution |
| Cooling Type | Liquid (AIO) | Liquid (AIO) | Air | Air | Liquid (AIO) |
| Compatible Sockets | LGA 1700 / LGA 1200 / AM4 / AM5 | LGA 1700 / AM5 | LGA 115x / AM4 | LGA 1700 / LGA 1200 / AM4 | LGA 1700 / LGA 1200 / LGA 115x / AM4 |
| Bearing Type | Dual Ball | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic |
| Use Case | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling |
| Fan Count | 2 | 2 | 1 | 2 | 2 |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Radiator Size | 240mm | 240mm | N/A | N/A | 240mm |
| Max TDP Support | 200W+ | Up to 150W | Up to 150W | Up to 150W | 150W |
| Fan Speed Range | 1500–2000 RPM | 2000–2500 RPM | 1500–2000 RPM | 1500–2000 RPM | 1500–2000 RPM |
| Noise Level | 21–30 dBA | 21–30 dBA | 21–30 dBA | 21–30 dBA | 21–30 dBA |
| Airflow (CFM) | 41–60 CFM | 41–60 CFM | 41–60 CFM | 41–60 CFM | 41–60 CFM |
| Static Pressure | High | High | Medium | Medium | Medium |
| Connector Type | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) |
| RGB Lighting | ARGB + Software Control | Addressable RGB | ARGB + Software Control | Addressable RGB | ARGB + Software Control |
| RGB Sync Compatibility | ASUS Aura Sync | Corsair iCUE | Corsair iCUE | Corsair iCUE | Corsair iCUE |
| Control Method | PWM | PWM | PWM | PWM | PWM |
| Thermal Paste Included | Yes | Yes | Yes | Yes | Yes |
| Mounting Hardware Included | Yes | Yes | Yes | Yes | Yes |
| Product Name | 794947-B21 High-Performance Liquid AIO Cooler | 789654-B21 Liquid Cooling AIO | 779841-B21 High Performance Air CPU Cooler | BW974A High-Performance Air Cooler | 820290-B21 Liquid AIO Cooler |
| Height | 1.5 inches | 1.5 inches | 5.5 inches | 6.5 inches | 5.2 inches |
| Width | 9.0 inches | 8.0 inches | 4.2 inches | 4.2 inches | 4.1 inches |
| Depth | 4.0 inches | 7.0 inches | 4.2 inches | 4.5 inches | 3.9 inches |
| Weight | 4.5 lbs | 3.2 lbs | 2.75 lbs | 2.3 lbs | 4.5 lbs |
High performance heatsink kept CPU temperatures stable under load.
OEM heatsink fit perfectly and improved thermal efficiency.
Noticeable reduction in thermal throttling.
Easy installation with solid cooling results.
Reliable cooling solution for Gen9 systems.
A field‐installable heatsink assembly designed to enhance CPU cooling efficiency in HP ProLiant DL380 Gen9 servers.
This kit is fully compatible with all HP ProLiant DL380 Gen9 rack-mount servers.
It lowers CPU junction temperatures by up to 10 °C under peak load, improving stability and lifespan.
Power down the server, remove the old heatsink, apply provided thermal interface material, then secure the new heatsink per the Quick Install Guide.