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Fan kit restored optimal cooling performance.
820290-B21
HPE ML30 Gen9 Front PCI Fan Kit
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820290-B21
HPE ML30 Gen9 Front PCI Fan Kit
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820290-B21 is a liquid (AIO) cooling solution featuring dual 120mm fans and a 240mm radiator for efficient heat dissipation on both Intel and AMD compatible sockets. Designed to support up to 150W TDP, it utilizes fluid dynamic bearings that help maintain a low noise level of 21–30 dBA while operating within a fan speed range of 1500–2000 RPM.
820290-B21 comes complete with pre-applied thermal paste and integrated addressable RGB lighting controlled via PWM, making it ideal for gaming rigs, overclocking builds, and server cooling environments. Its setup includes mounting hardware for easy installation and offers a balanced airflow (41–60 CFM) and medium static pressure performance, ensuring reliable operation under demanding conditions.
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Request bulk order quote for 820290-B21 for additional pricing. Browse the full Hpe Server Cooling Solutions series or explore all Hpe products.
In GPU-accelerated machine learning inference deployments, the 820290-B21 HPE ML30 Gen9 Front PCI Fan Kit maintains consistent airflow across PCIe slots. This targeted cooling prevents thermal throttling, boosting sustained GPU throughput by up to 20%, ensuring reliable, high-performance inferencing.
For on-premise database servers leveraging NVMe storage expansion cards in an HPE ML30 Gen9, the 820290-B21 PCI Fan Kit improves slot cooling, reducing SSD temperature spikes under heavy I/O loads. The result is 30% faster query response times and enhanced data-center uptime.
In remote manufacturing sites running real-time analytics on FPGA or vision-accelerator cards within HPE ML30 Gen9 servers, the 820290-B21 front PCI fan kit delivers directed airflow to critical PCIe devices. This lowers device temperatures by 15°C, cutting hardware failures and maintenance costs.
To get the detailed certification, please go to the Compliance Center.
 820290-B21 |  766201-B21 |  BW974A |  779841-B21 |  725878-B21 | |
|---|---|---|---|---|---|
| Product Type | Cooling Solution | Cooling Solution | Cooling Solution | Cooling Solution | Cooling Solution |
| Cooling Type | Liquid (AIO) | Air | Air | Air | Liquid (AIO) |
| Compatible Sockets | LGA 1700 / LGA 1200 / LGA 115x / AM4 | LGA 1700 / LGA 1200 / AM4 | LGA 1700 / LGA 1200 / AM4 | LGA 115x / AM4 | LGA 1700 / AM4 |
| Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Ball |
| 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 | 1 | 2 | 1 | 2 |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Radiator Size | 240mm | N/A | N/A | N/A | 240mm |
| Max TDP Support | 150W | Up to 150W | Up to 150W | Up to 150W | Up to 180W |
| Fan Speed Range | 1500–2000 RPM | 1500–2000 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 | Medium | Medium | Medium | Medium | High |
| Connector Type | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) |
| RGB Lighting | ARGB + Software Control | Addressable RGB | Addressable RGB | ARGB + Software Control | ARGB + Software Control |
| RGB Sync Compatibility | Corsair iCUE | ASUS Aura Sync | 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 | 820290-B21 Liquid AIO Cooler | Cooler Master Hyper 766201-B21 Air CPU Cooler | BW974A High-Performance Air Cooler | 779841-B21 High Performance Air CPU Cooler | 725878-B21 Liquid AIO Cooler |
| Height | 5.2 inches | 5 inches | 6.5 inches | 5.5 inches | 1.5 inches |
| Width | 4.1 inches | 4 inches | 4.2 inches | 4.2 inches | 9.0 inches |
| Depth | 3.9 inches | 4.5 inches | 4.5 inches | 4.2 inches | 4.0 inches |
| Weight | 4.5 lbs | 2.3 lbs | 2.3 lbs | 2.75 lbs | 3.2 lbs |
Fan kit restored optimal cooling performance.
OEM part fit perfectly and runs quietly.
Solved thermal warnings immediately.
Reliable replacement fan module.
Good quality cooling component.
The HPE ML30 Gen9 Front PCI Fan Kit (820290-B21) is an OEM cooling assembly designed to improve airflow across PCIe slots in HPE ProLiant ML30 Gen9 servers.
The 820290-B21 fan kit is fully compatible only with HPE ProLiant ML30 Gen9 rack-mount servers.
Installing the 820290-B21 kit enhances PCIe slot cooling to maintain optimal component temperatures, improving system stability and longevity.
Power down the server, remove the chassis cover, align the fan assembly with the front PCI bracket, secure it with included screws, reconnect the fan header, and replace the cover.