Not long ago, we tested two popular case fans, pitting Noctua’s NF-A12x25 G2, an industry legend, against the also well-liked Arctic P12 Pro. We had some surprising results, as the Arctic fan almost kept up with the much pricier Noctua. However, Arctic also sent us some P12 Pro’s of the RGB variety, so we thought it would be fitting to put Artic’s colorful spinner up against some competitors in its own price category.
Let’s dive straight into the testing.
Testing Methodology
For evaluating PC fans, there are two main terms you should be aware of: Airflow and Static Pressure.
Airflow is easy – how much air does a fan move (through a wind tunnel in our tests) when not burdened by a radiator, mesh, or any other restriction.
Static pressure can be measured by placing the fan on a wind tunnel, closing the end, and measuring the pressure generated with a sensor, which spits out a value in millimeters of water. The higher the number, the better a fan is likely to be at overcoming restrictions.
However, I find that a fan’s measure of static pressure isn’t actually all that useful – all it tells you, really, is how well a fan can push air up against a wall, which is obviously not how you want to position the back of your PC. Instead, I prefer to test for noise and airflow through a radiator and intake mesh, as well as the standard suite of unrestricted tests for a more nuanced, real-world picture.
Testing Results of 5 Budget RGB Fans
(Not) Breaking the Noise Floor
On the day of this testing, the noise floor in my office sat between 32.4 and 32.7 dBA, and I am happy to be able to write that all five fans, when run at their minimum speed, were completely inaudible and did not break the noise floor, even with the dB meter placed at just 20 cm from their hubs.
This used to be something I only saw in premium fans, where manufacturers have designed quiet hubs, so I was delighted to see this kind of performance from budget-friendly RGB fans.
Min Duty (Not Zero) | dBA | RPM |
|---|---|---|
be quiet! Light Wings LX | 32.7 | 213 |
Fractal Design Aspect 12 RGB | 32.7 | 506 |
Arctic P12 Pro RGB | 32.5 | 511 |
Levelplay Combat Fan 12 A-RGB | 32.4 | 364 |
Phanteks M25 G2 RGB | 32.4 | 302 |
Airflow is not recorded for these tests, as none offer enough air speed for the anemometer to register.
dBA VS. Airflow: Unrestricted
The first series of tests I subject the fans to is measuring their acoustics in an unrestricted environment. I target every whole dB between 34 and 44 dB(A), and record the associated RPM. Then, I put that same fan on our wind tunnel, and record the windspeed at said RPM figures. This is then calculated over to cubic meters per hour for airflow.
In this test, Arctic’s P12 Pro leads the pack by a significant margin, followed by Be Quiet’s Light Wings LX. Phanteks’ M25 G2 RGB only performs a smidge worse than Be quiet’s fan.
Note the dip in the curve of Fractal Design’s Aspect 12 RGB at 37 dB(A). This fan creates quite an annoying resonance at certain speeds, where it gets louder at a certain RPM, and then quiets down again once past this RPM. I suspect that if I were to test at even smaller increments, the graph would become quite wobbly.
Most fans exhibit this kind of behavior to some extent, where they create unwanted noises at certain RPMs – even Arctic’s fan does this, but the level to which the Aspect 12 RGB made this noise was really quite bothersome.
Similarly, for the Phanteks’ fan (while its curve looks alright), I was unable to test at 35 dBA, which is why its line starts at 36. No matter how much I fidgeted with its speed, I simply could not get the dB meter to hit 35 – it was either over, or under, but not on.
The Levelplay Combat fan had the same issue, but at 41 dB(A), where I just couldn’t hit the mark.
All of this is not to say that Arctic’s fan is without imperfections either, though. This sample exhibited a light high pitch at certain RPMs which didn’t affect the readings, but I did notice, and at speed it started wobbling – a sign that it is unbalanced.
The predicament: Whether to test with more fans
I’ve wondered throughout testing these fans whether I should test with more fans and take the average results, but I have two problems with this: firstly, testing this thoroughly already takes quite some time, and more importantly, averaging out the results would mask defects.
In a premium fan from Noctua, we expect near-perfection. However, these are RGB fans that cost no more than $15 each. There will be some variance in issues between samples, but not averaging out the results means you get to see the fan’s performance for what it really is with one specific fan. Some of these behaviors will be down to their design and consistent across samples, while other issues may differ between units.
I do request three samples for each fan to review, however. If I do run into any issue like those mentioned above, I grab the other samples and quickly run them from lowest to max RPM and judge the results. If they exhibit similar behavior, I roll with the data, but if they to suddenly sound much cleaner, then I know there’s a manufacturing defect at play.
dBA VS. Airflow: Radiator Restricted
Pin these fans on a radiator, and something very interesting happens. Four of the fans perform nearly the same as each other, with the Arctic P12 Pro standing out by a huge margin.
Note that for this test, the acoustics are measured separately from the acoustics without the radiator, and the fans follow similar noise-to-RPM patterns.
DBA VS. Airflow: Mesh + Filter Intake Restricted
When placing the fans behind a mesh intake, things again get interesting. This is the most challenging test of the three, as placing intake mesh in front of a fan fundamentally changes the way they sound – intakes punish airflow more than radiators, not because they’re more restrictive, but because placing something in front of a fan has a much more profound effect on the noise than something behind it, and this is where a fan’s blade design really starts to shine.
The Arctic P12 Pro continues to lead the race here, with Be Qquiet’s Light Wings LX following behind. The Combat fan, despite being from a lesser-known brand, does OK for itself.
However, Fractal Design’s Aspect 12 RGB and Phanteks’ M25 G2 put down appalling performances on this test, offering only 60% of the P12 Pro’s airflow at the same noise levels.
Maximum performance
Finally, the fans get a test at full blast.
Max Duty | RPM | dBA | Airflow (m3/h) |
|---|---|---|---|
be quiet! Light Wings LX | 1621 | 43.5 | 73.3 |
Fractal Design Aspect 12 RGB | 1961 | 52 | 76.9 |
Arctic P12 Pro RGB | 3079 | 55.4 | 125 |
Levelplay Combat Fan 12 A-RGB | 1811 | 42.9 | 67.2 |
Phanteks M25 G2 RGB | 2147 | 53.1 | 97.2 |
This isn’t a useful test to compare noise-to-performance efficiency of the fans, but if you’re looking for a fan with low maximum speed to keep noise levels down without having to make a custom fan curve, Levelplay’s Combat Fan is your best pick. On the other hand, if you’re looking for maximum peak performance, Arctic’s P12 Pro RGB is a beast in a league of its own that can spin at well above 3000 RPM.
The dBA figure doesn’t say everything
Just because a fan performs well on the charts doesn’t necessarily mean it may be pleasant to listen to. One example of this is the Combat Fan from Levelplay. It’s not a terrible performer, but at certain speeds, something starts humming at an annoying mid-frequency. It was one of those frequencies that echoes through the room, and if I weren’t testing it but had it in my PC, it would drive me mad, wondering what the source of the noise in the room is.
The Fractal Design Aspect 12 RGB also suffers from a painfully dirty noise profile that did show up on the charts, as it limited the fan’s ability to reach the speeds it otherwise would have had it not made these noises. It sounds a bit raspy, almost like there’s grit in the motor, and it had similar resonant noises as the Combat Fan.
The M25 G2 didn’t have weird noises – it was just inefficient in its noise-to-airflow ratio.
Judging the RGB, feature set and pricing
Fractal Design Aspect 12 RGB
Fractal Design’s Aspect 12 RGB fans have the worst RGB of the lot. The blades are almost opaque, which makes the RGB on anything but the hub rather dim compared to the competition. It also does not have a zero-RPM mode – when fed a 0% PWM duty, it will still spin, and with a minimum speed of about 500 RPM; I consider this a problem. Yes, it’s quiet at its minimum speed, so that’s not an issue, but high minimum speeds combined with no Zero-RPM implementation can lead to excessive dust buildup, as the constantly whirring blades accomplish nothing but to pull small particles towards your filter and / or fan.
This fan is available for $51.47 as a 3-pack, which brings the per-unit cost to $17.16.
Combat Fan 120 A-RGB
Levelplay’s Combat Fan 120 A-RGB comes with a ring around its blades, which makes for a cool look. Despite the RGB coming from the hub, it still lights up the ring moderately. It also responds correctly to a Zero-RPM signal.
Pricing for the Levelplay Combat fan sits at $12.23 per unit.
Be Quiet! Light Wings LX
Be Quiet’s Light Wings LX fans feature good RGB and a slick blade design, but no Zero-RPM feature. That being said, the minimum RPM is extremely low, tested at just 213 RPM, so I can forgive the lack of a zero-RPM mode.
Pricing sits at $47.90 for a 3-pack, bringing the per-unit price to $15.97.
Phanteks M25 G2 RGB
Phanteks M25 G2 RGB, although not being the quietest fan, offers a properly complete feature set that makes a compelling case for forgiving its performance shortcomings. The RGB is gorgeous and it comes with an infinity-mirror hub. The fans can also clip on to each other, daisy-chaining in a not-quite-wireless fashion but certainly better than the competition. The fan even comes with plastic covers for the screw holes for a tidy appearance. It also responds correctly to a 0% PWM duty signal.
Pricing sits at $36.99 for a 3-pack, which is a surprisingly good price if you consider the amount of effort that went into their design. It may not be the quietest fan, but it sure is the prettiest and comes with most bits and pieces to complete the set.
Arctic P12 Pro RGB
Arctic’s P12 Pro lights up bright and uniform, offering a fantastic visual spectacle. It also comes with a proper Zero-RPM implementation, but that’s where its feature set ends.
This fan costs just $28.49 in a 3-pack, which is a mighty good deal that’s hard to pass up at $9.50 per fan.
Picking a winner
It would come as no surprise if I said that Arctic’s P12 Pro was the winner of this test, but I’m not sure about that. The P12 Pro RGB is clearly the best performer, but it was a tad unbalanced and had some light high-pithed whining. It also clicked a few times upon startup, but most of the fans did that. Mechanical noises.
If you’re looking for the best value offering, the Arctic P12 Pro RGB is hard to pass up with the 3-pack costing just $9.50 per fan.
The Light Wings LX, although being the second-place fan in testing for noise levels, is my favorite of the bunch. Why? It’s clean! It makes a crisp, clean sound ---just a whoosh, with no extraneous noises on top. It’s a slightly louder whoosh, but a clean whoosh. Of course, that’s not to say it may be your favorite. Personally, I’m sensitive to these kinds of noises, and I’m willing to pay a little extra for a clean-sounding PC, but that little bit extra is quite a bit if you tally it up over multiple spinners.
Costing $15.97, this puts the be quiet! Light Wings LX right on the edge between budget and mid-range RGB fans.
If, on the other hand, you’re someone who doesn’t mind noise too much, and wants to build something that you’re truly proud to show off, Phanteks’ M25 G2 fans do away with the focus on silence, and prioritize looks with bright RGB, an infinity mirror, seamless daisy-chaining, and even a mechanism that clips the spinners into one unit and covers for the screw holes.
I’m someone that works many hours a day in silence, with my open air PC on my desk near me, so I’ll prioritize silence any day of the week. But if you’re a gamer, keep the PC on the ground, or wear a headset all the time anyway, the quality of the RGB may be far more important.
If picking a winner is so difficult, should we pick a loser?
If there’s one clear conclusion I can draw from this batch of testing, it’s that Fractal Design’s Aspect 12 RGB is on my do-not-buy list. It offers no real redeeming features to make up for its shortcomings – it produces a dirty, inconsistent noise, performs disappointingly compared to the competition, has no Zero-RPM mode, and even the RGB doesn’t look all that great. It doesn’t even come with vibration-damping rubber pieces on the corners.
I honestly don’t understand what it’s doing in Fractal Design’s product portfolio at all, other than making the company’s other fans look good. And the wildest thing is, it’s also the most expensive fan tested here, at $17.16 a piece.
In this respect, fans are much like tires for cars: they come in all shapes and sizes, each with different purposes, from different manufacturers, and they all seem to do the same thing. And much like tires, in the world of fans there are a few great ones, many good ones, and some to avoid entirely.
