Case fans come in lots of sizes and varieties. Today I'm taking a look at two case fans from Noctua. While some fans are designed to be as flashy as possible, these fans from Noctua were engineered to be as quiet as possible.
Some of you may already be familiar with Noctua, they recently launched a couple of very successful silent processor coolers but they also have case fans and chipset coolers. Noctua is an European company, they have their headquarters in Austria and they work closely together with the Austrian Institute of Heat Transmission and Fan Technology (Österreichisches Institut für Wärmeübertragung und Ventilatorentechnik, ÖIWV) to develop high-end sound-optimised cooling products.
The company Noctua was found by the Austrian computer distributor Rascom and the Taiwanese cooling manufacturer Kolink International. Here's a snip of information about what the name "Noctua" means and why they picked an owl as their company logo:
The little owl, Athene noctua, is the symbol of the Greek goddess Athene, who represents wisdom, science and strategy. She has a marked preference for the most clever among the Greek heroes, like Odysseus, who endure their adventures by the use of savvy consideration instead of mere force. Until today, the owl symbolises intelligence and prudence, its manlike face emblematises attentiveness and communication. We from Noctua follow the suit of its calm and accurate observation in the dark, its soundless flight as well as the effective, economical use of its powers and precise attack.
I suppose that's enough Greek mythology for today ;) Lets take a look at the products that will be reviewed today. In front of me are two Noctua case fans: the 120mm NF-S12-1200 and the 80mm NF-R8.
Both products ship in a nicely designed cardboard box.
Noctua NF-R8 80mm fan
The 80mm fan arrives in this package:
Noctua NF-R8 specifications:
80mm fan, 800-1800 RPM
Sound-optimised blade geometry and profile
Noctua Raised-blade design
Self-stabilising oil-pressure bearing (SSO bearing)
6 years warranty
Input power: 1.32W
Input current: 0.11A
Voltage range: 4-13V
MTBF: more than 150,000 hours.
As we can see from the specifications these fans feature lots of optimizations to make them as quiet as possible and they also promise a very long lifetime of more than 17 years.
The company says this is the first fan that uses a 80mm rotor designed by the Austrian Institute for Heat-Transmission and Fan Technology, this rotor features a bigger distance between the rotor and the stator to reduce noise. The blades are optimized for maximum efficiency, they should perform 10% better than conventional blade geometries, and the fan also features a self-stabilising oil-pressure SSO bearing. This new bearing reduces resistance, abrasion and noise emission and should last a lot longer than conventional fans.
The fan has redish fan blades and a light-brown enclosure. Personally I think this looks quite good but I can imagine that some people may not like the colour scheme of these fans. I also noticed that the cables of both fans have been nicely sleeved.
As you can see the fan blades look a bit different than normal fans, they were designed this way to make them more silent.
Here are the three adaptors. The first one is a 3 to 4-pin adaptor, the other two are the low-noise-adaptor (L.N.A.) and the ultra-low-noise-adaptor (U.L.N.A.). The L.N.A. and U.L.N.A. adaptors have a resistor to reduce the voltage, this makes the fans even more quiet. But this comes at a price of course, the lower the voltage the slower the fan will spin.
Without the adaptors the fan spins at 1800RPM, with the L.N.A. the RPM drops to 1300 and with the U.L.NA. it's only 800RPM anymore.
Here's a table which shows you how this affects the airflow and the noise level:
Airflow: 53m³/h (31.2CFM)
Airflow: 39m³/h (23CFM)
Airflow: 26m³/h (15.3CFM)
Besides the fan and the adaptors, the package also includes four fan screws and four vibration compensators.