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Fluid dynamic bearings are an expensive option. FDB adds to the cost of a fan. Frame-shaping we have seen before. Specifications
The only other problem to consider is that occasionally, components immediately adjacent to the motherboard fan header can get in the way of the larger 4-pin fan connector, physically preventing connection. This problem also occurs if you try to use an in-line fan speed controller such as the one made by Gelid. be quiet! lives up to its name: 20years experience in the field of noise reduction and silence make be quiet! products probably the most silent on the market. Now for PWM. You wouldn’t normally use a 1000-RPM fan on a rad, but this fan is PWM-controlled. So to compare it with other PWM fans: For the SilentWings 3, be quiet! has also developed a new installation system. The system doesn't just feature special anti-vibration properties, but also allows for an easier assembly. Thus the SilentWings 3 can be mounted to coolers, radiators and to corresponding fan mounts in a PC case. Compared to its predecessor, the modular corners of the frame can be exchanged easier. Two included sets lead to a higher flexibility during installation. SW3 fans were originally designed by BeQuiet to be used with their cases, which included additional circuitry to "pull up" the pwm signals applied to them to 5 volt levels (you couldn't control pwm SW3s using the Aquaero unless you added additional circuitry to raise pwm signal levels to 5V; a similar issue was experienced using pwm pumps with the Aquaero). This was determined by IT DIVA on OCN, and she eventually designed an addon circuit that provided properly spec'd pullup resistance.
Features
Undoubtedly the fans are an integral factor in minimizing the noise levels of the products in the be quiet! portfolio.Specially developed Silent Wings and other be quiet! fans are used throughout all product ranges. They are equipped with a variety of noise-reducing features, such as special bearings, smooth motors, optimized airflow and vibration decoupling. Thanks to these fans be quiet! products attain a perfect balance of ideal cooling performance and virtually inaudible operation. The people at be quiet! sell you the retail fans with what they call “anti-vibration fittings” as well. They say, “Removable anti-vibration mountings on all four edges of the fan reduce vibrations transmitted to the PC case to an absolute minimum.” The corner fittings look nice, but because I never had them in hand I can only say the the pictures from be quiet have the fittings looking nice. Today we’re having a look at the be quiet! Silent Wings 3 case fans that came with the recently reviewed Dark Base Pro 900. These fans are available in 120/140mm sizes at two different speeds of 1000 RPM and 1650 RPM as PWM or DC and are available at many retail outlets. Where the Silent Wings 4 finds more success is when it comes to pressure. The standard 120mm model manages 1.79 mm/H₂0 at 1,600 RPM, but up to 3.86 mm/H₂0 at full speed. That makes it a great fit for radiators, and up there with the likes of Corsair's SP120 static pressure fans at 1.45 mm/H₂0 at 1,400 RPM. The Noctua NF-S12B isn't the fan you'd want for this purpose at 1.31 mm/H₂0 at 1,200 RPM, instead you'd be better off with something like the NF-P12 redux. The fans were placed on a test stand, where their free air RPM was observed and their noise was assessed. The standard proxy for what you can hear is the Sound Pressure Level (SPL), measured in decibels and given a type A-weighting (dBA). A silent room is about 30 dBA.
The airflow was assessed using a standard measure, cubic feet per minute, or CFM. The air entered a sealed 8″x8″x8″ box (200+ mm on a side) where it was allowed to mix. The air left the box through an exhaust port, where it was measured with the vane head of an Extech AN100 anemometer, averaging 10 readings per fan setting. The fans were tested in an unobstructed state, with a metal mesh dust filter and on a 30 FPI rad. Test Results These are excellent results for fans that came in a case. Usually cases come with pretty cheap fans. The fans we received with the Dark Base Pro 900 were premium fans. The retail versions of the Silent Wings 3 are even more premium than that, coming with both kinds of corner fittings, providing those users who like to fiddle with things something to fiddle with. The Silent Wings 3 fan is a premium product. When you buy the fan retail it comes with two different fittings for the corners. However, we are reviewing the fans that came with the Pro 900 case, so our review will focus on the 140 mm 1000 RPM PWM fans that were included. The image above shows the fan with what be quiet! calls “hard plastic fittings.” These may be hard on the outside but on the inside, there is rubber for reducing noise when a screw holds it tight. Whoever decides to buy be quiet! products, buys proven premium quality and the silent operation typical of be quiet!. And all the fans are built with PBT, the same plastic that's best for gaming keyboard keycaps. Be Quiet says in their testing these fans worked just fine for really long periods, and say that even for four of more years of maximum RPM, there shouldn't be any sign of impeller creep. That's basically when the constant spinning and centrifugal forces on the blades causes them to stretch out, which, you might have guessed, isn't ideal.
Service tools
Some comments on their features: Most fans have four poles. In their PDF about these fans, be quiet! says that six poles contribute to a smoother transition between magnetic poles, less vibration, reduced power consumption and low start-up voltage. On the other hand, this usually is found only in more expensive fans. NB – this and some of the subsequent photos were supplied by be quiet!) Fan with anti-vibration fittings Well if you have review questions, probably talk to @Avacado. Keep in mind not everyone necessarily has the specific comparisons you may be looking for. But all in all there's definitely something to like here for PC gamers. Fans are an often overlooked piece of any PC build, but they really make a difference to your PC gaming experience, both in terms of cooling performance and noise. It's good to see some firm competition (namely from Noctua) keeping manufacturers striving for more.
As you can see on both intake and exhaust, these fans offer “optimized airflow” by providing their blades with a wavy shape. The furrows follow the air across the blades to smooth the airflow. It seems to work: these are quiet fans.The fans were installed with what be quiet! calls “hard plastic fittings” on the corners. Belying their name they have rubber cores designed to attenuate vibrations. To finish the job they fasten these fans with rubber washers. Installed fans close up A Closer Look The Silent Wings 3 are quiet fans. Their airflow is about mid-range but they are among the quieter case fans. Arguably with the other corner mounts, it would be quieter still. We received the three as part of a Dark Base Pro 900 case, two intakes behind a dust filter in front and one exhaust. Fans Behind Filter 3 Fans in Case that's interesting... exactly what i use Will for sure investigate a bit further... Thank you very much for that information, had no clue about that! Here is a closeup of a corner mount that has been removed, showing how the frame holds it in place. Note that the corner shows its rubber core in this picture. Corner Closeup
be quiet! SilentWings fans stand for state-of-the-art technology, virtually inaudible operation and superior cooling. The third generation of this award-winning fan series offers unrivalled and uncompromising performance with a broad range of meticulous optimisations. They feature a smooth-running 6-pole motor, an advanced fluid-dynamic bearing, a unique airflow-optimised fan blade design and a fan frame with funnel-shaped air inlets. The six poles of the motor produce a smoother transition between the magnetic poles. This results in very low vibration and silent operation with less energy consumption. Anyway, AquaComputer eventually added similar circuitry to the SPLITTY9 Active and QUADRO products, which helped mitigate the problem down the road.To make the SilentWings 3 into an absolute high-end product, be quiet! utilizes an advanced fluid-dynamic bearing with a brass core. The combined technology in this fan allows a lifespan of 300,000 hours. This applies to all four variants of the two available sizes (120 and 140 millimeters): be quiet! offers the SilentWings 3 in a 3-pin and PWM variant, and these are both also available as High-Speed editions. With such a variety of PC fans on the market these days a manufacturer really needs something that makes their product stand out. Basic considerations when choosing a case fan are appearance, cost, noise level and performance which depending on your needs will carry different weights in your decision. With that in mind let’s see how the Silent 3 case fans measure up and if they might be a product you would consider. Introduction The Silent Wings 3 normally comes in a box with a variety of accessories, including two sets of corner mounts, screws and connectors (photographs from be quiet!). The case fans did not come with “anti-vibration fittings” at the corners, but retail fans do.
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