Noctua NF-B9 Reviewhardnrg - June 23, 2008
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The most unique features of this fan in terms of performance, are its claims of having a low noise signature, and having decent airflow and static pressure for its relatively low rotational speed.
I decided that testing the fan with no resistance would not be all that meaningful, and difficult to quantify in measurements. So I devised a testing setup that would let me compare the fans ability to provide sufficient airflow in a demanding scenario.
Heatsinks without heatpipes rely solely on forced air to remove the heat from the fins. The Thermalright SLK-948u is one such heatsink.
This heatsink is pure copper and the fins are arranged very closely together.
The largest fan size that the heatsink can take is 92mm; the fan clips (not pictured) allow either 25mm or 38mm thick fans to be secured in place.
If the fan can provide sufficient static pressure through the tightly packed fins, it will result in good cooling of the heatsink. Also, noise levels can be observed with the fan in a real world situation.
- Processor: AMD X2 3800+ 10x200
- CPU Cooling: Thermalright SLK-948u
- CPU Fan(s): Noctua NF-B9
- Motherboard: DFI NF4 Ultra-D
- Memory: 2x1GB G.Skill HZ PC4000 3-4-4-8-1T
- Video Card: NVidia 7500LE 256MB
- Power Supply: Thermaltake Purepower 480W
- Hard Drive: Seagate 120GB 7200.7 IDE
- OS: Windows XP Professional SP2
Comparison CPU Fans:
- CPU Fan: Thermaltake A9225L12S
- CPU Fan: Panaflo FBA09A12M
- CPU Fan: Jamicon JF0925H1MSAR
- CPU Fan: Zalman RDH9025B
- CPU Fan: Thermaltake F129025BH
- CPU Fan: Vantec TD8038H
|Brand||Manufacturer||Model||Bearing||Speed||Static Pressure||Air Flow||Noise|
|Noctua||Noctua||NF-B9-1600||SSO (Oil Pressure)||1600||1.61||37.8||17.6|
- CPU: 9x303=2728 MHz, 1.375v x 110% = 1.5125v
As well as stock voltage and speed on the CPU, I tested the highest stable CPU overclock for a higher heatload for the fans to deal with.
- OCCT v2.0 Perestroika
- Subjective perception listening test