That product is currently unavailable. Please try a different product or see this article for help.
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red

ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red

ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
ARCTIC BioniX P120 –-120 mm Gaming Case Fan with PWM Sharing Technology (PST), Pressure-optimised, Very quiet motor, Computer, Fan Speed: 200–2100 RPM - Red
$19.74 Why this price?
Checking for changes Product info up-to-date Product info updated We've detected that this product is out of stock. Enter your email below and we will notify you when it is available.
Buy Now, Pay Later
4 equal payments of $
- Zero interest
- No credit check
- Quick & easy checkout

Free shipping on this product


Availability: Only 1 left in stock - order soon.
Fulfilled by Platinum Micro


Get it by Monday, Aug 24
Order within 13 hr 59 min

Features

  • OPTIMISED FOR STATIC PRESSURE: During the development of the new BioniX P120, special emphasis was placed on a focused airstream and thus a high static pressure
  • PWM SHARING TECHNLOGY (PST): PST ensures that all your fans listen to a single control signal, stop at low load, turn whenever necessary
  • EFFICIENT ENGINE MODERNISATION: Thanks to sinusoidal magnetation, the new engine generates only 5% of the vibrations due to the switching of an ordinary DC motor
  • 200 TO 2100 RPM REGULATED VIA PWM PST: With a wide range of regulation and the PWM Sharing Technology (PST), the BioniX P120 fan speed can be controlled synchronously with all your other fans together
  • TECHNICAL DATA: Fan speed: 200–2100 RPM, Airflow: 67.56 CFM/114.79 m³/h (@ 2100 RPM), Noise Level: 0.45 Sone (@ 2100 RPM), Pin: 4-pin

Description

ARCTIC offers innovative solutions incessantly - changing impossible user requirements into new. Always focused on our customers, ARCTIC is devoted to deliver excellence through a strong dedication and a high sense of commitment. In light of the ever-changing consumer landscapes, we aspire to continue to expand and diversify our products and solutions. From computer cooling and peripherals to audio and digital home entertainment, we strive to enrich people's lives by creating innovative, user friendly yet affordable products with a great value of benefit. For us value for money is a key factor - a constant our customers rely on.


Brand Name ARCTIC


Item model number ACFAN00115A


Item Weight 4.9 ounces


Product Dimensions 4.72 x 1.07 x 4.72 inches


Item Dimensions L x W x H 4.72 x 1.07 x 4.72 inches


Color BioniX P120 (red)


ASIN B07G7W8629


Customer Reviews 4.6 out of 5 stars 2,304 ratings 4.6 out of 5 stars


Best Sellers Rank #795 in Computer Case Fans


Date First Available August 6, 2018


Shipping

This product includes free shipping to all US addresses.


Delivery

Unless otherwise stated above, most products arrive within 2-3 business days. Larger items may take 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Features

  • OPTIMISED FOR STATIC PRESSURE: During the development of the new BioniX P120, special emphasis was placed on a focused airstream and thus a high static pressure
  • PWM SHARING TECHNLOGY (PST): PST ensures that all your fans listen to a single control signal, stop at low load, turn whenever necessary
  • EFFICIENT ENGINE MODERNISATION: Thanks to sinusoidal magnetation, the new engine generates only 5% of the vibrations due to the switching of an ordinary DC motor
  • 200 TO 2100 RPM REGULATED VIA PWM PST: With a wide range of regulation and the PWM Sharing Technology (PST), the BioniX P120 fan speed can be controlled synchronously with all your other fans together
  • TECHNICAL DATA: Fan speed: 200–2100 RPM, Airflow: 67.56 CFM/114.79 m³/h (@ 2100 RPM), Noise Level: 0.45 Sone (@ 2100 RPM), Pin: 4-pin

Description

ARCTIC offers innovative solutions incessantly - changing impossible user requirements into new. Always focused on our customers, ARCTIC is devoted to deliver excellence through a strong dedication and a high sense of commitment. In light of the ever-changing consumer landscapes, we aspire to continue to expand and diversify our products and solutions. From computer cooling and peripherals to audio and digital home entertainment, we strive to enrich people's lives by creating innovative, user friendly yet affordable products with a great value of benefit. For us value for money is a key factor - a constant our customers rely on.


Brand Name ARCTIC


Item model number ACFAN00115A


Item Weight 4.9 ounces


Product Dimensions 4.72 x 1.07 x 4.72 inches


Item Dimensions L x W x H 4.72 x 1.07 x 4.72 inches


Color BioniX P120 (red)


ASIN B07G7W8629


Customer Reviews 4.6 out of 5 stars 2,304 ratings 4.6 out of 5 stars


Best Sellers Rank #795 in Computer Case Fans


Date First Available August 6, 2018


Shipping

This product includes free shipping to all US addresses.


Delivery

Unless otherwise stated above, most products arrive within 2-3 business days. Larger items may take 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Features

  • OPTIMISED FOR STATIC PRESSURE: During the development of the new BioniX P120, special emphasis was placed on a focused airstream and thus a high static pressure
  • PWM SHARING TECHNLOGY (PST): PST ensures that all your fans listen to a single control signal, stop at low load, turn whenever necessary
  • EFFICIENT ENGINE MODERNISATION: Thanks to sinusoidal magnetation, the new engine generates only 5% of the vibrations due to the switching of an ordinary DC motor
  • 200 TO 2100 RPM REGULATED VIA PWM PST: With a wide range of regulation and the PWM Sharing Technology (PST), the BioniX P120 fan speed can be controlled synchronously with all your other fans together
  • TECHNICAL DATA: Fan speed: 200–2100 RPM, Airflow: 67.56 CFM/114.79 m³/h (@ 2100 RPM), Noise Level: 0.45 Sone (@ 2100 RPM), Pin: 4-pin

Description

ARCTIC offers innovative solutions incessantly - changing impossible user requirements into new. Always focused on our customers, ARCTIC is devoted to deliver excellence through a strong dedication and a high sense of commitment. In light of the ever-changing consumer landscapes, we aspire to continue to expand and diversify our products and solutions. From computer cooling and peripherals to audio and digital home entertainment, we strive to enrich people's lives by creating innovative, user friendly yet affordable products with a great value of benefit. For us value for money is a key factor - a constant our customers rely on.


Brand Name ARCTIC


Item model number ACFAN00115A


Item Weight 4.9 ounces


Product Dimensions 4.72 x 1.07 x 4.72 inches


Item Dimensions L x W x H 4.72 x 1.07 x 4.72 inches


Color BioniX P120 (red)


ASIN B07G7W8629


Customer Reviews 4.6 out of 5 stars 2,304 ratings 4.6 out of 5 stars


Best Sellers Rank #795 in Computer Case Fans


Date First Available August 6, 2018


abunda_amazon_reviews Update: I bought a 5 pack of the PWM PST fans. They are just as amazing. My current setup is 3 silent Arctics that run at a static 1050 rpm. Two 120 PST Arctics on a NH-D15 cooler and one more as an exhaust fan. I was able to review the Arctic P12 Silence version of this fan. It is a 3 pin, fixed rpm of 1050. As someone who has purchased many cooling products based on recommendations only to be disappointed, let me say silence is subjective. I would say my bar is higher than most. I do have quite a collection of Noctua products. While I believe they are the best in the quiet department, their price tag can be a barrier to many. When I saw these Arctic fans, their price, and their reviews, I was curious. What makes a fan quiet? Some people assume it's all about rpm (speed) and any fan can be quiet if you run it slow enough. This is completely false. Bearing noise and motor noise is among the biggest causes of noise. Take the Cooler Master Fan Pro, even at 400 rpm, the bearing noise is offensive. They actually sound better at higher speeds as the air noise masks the bearing buzz. Noctua's secret sauce is their SSO bearing, which is a tuned Fluid Dynamic Bearing. These are among the quietest and usually demands a premium price. This includes both Noctua and Be Quiet! I was surprised to see that Arctic was able to put a Fluid Dynamic Bearing in a fan that cost a third of the price. What's the verdict on the Arctic P12? They are among the quietest I've heard. There is no bearing or motor noise, none! The air noise is also minimal and pleasant. Only noticeable at 10 inches or less to my ears. Matching the rpm to my collection of Noctua fans, Arctic wins in that department. The Arctics also move a comparable amount of air, but I'd give the nod to Noctua. Where does Arctic skimp out? Noctua has a sleeved cable, the P12 does not. The cable is all black, but is not sleeved. This would be a no-no in a premium fan, but is easily forgiven in a fan this price. I would also say the density and weight of the plastic is slightly below Noctua and even Thermalright. It's not poor, it's not cheap looking like OEM fans, just a step down. Most people won't notice, once the fan is installed, you won't be touching it for years anyway. Overall, the solid black scheme is attractive and will fit in most builds. My conclusion is I won't be spending more money on Noctua anytime soon. Sorry Noctua. They are an amazing product and are superior. When Arctic costs so little, paying for that difference is hard to justify. Buy Arctic for sure. Thank you for reading to the end and please help me out by pressing that helpful button.;;Reviewed in the United States on March 5, 2020;;5.0 out of 5 stars;;Impressive Silence!;;Bob;;;I initially ordered one 5 pack of the Arctic P12 PWM PST to get up to date with PWM controlled fans for my two 240mm radiators. These fans spin smooth and have a nice RPM range. But as I started to setup the fan curve I noticed an whining sound initially around 1170 RPM. The fans would produce a tone just under 400 Hz. At first I thought it was an issue daisy chaining four fans to one PWM header so I separated them into new pairs and adjusting the curve so it would rarely stay in the 1170 RPM range the fans were now fine... until it needed to ramp above and below 1170 RPM where you would hear it for a brief second. I thought the problem with this tone being produced was these fans are installed in the pull position, but testing it further it can happen in the push position and freely spinning with no obstruction or resistance to the fan. A ticket was opened with Arctic to bring up the problem and the solution to it was possibly the fans were defective and since I was still in Amazon's 30 day policy I should contact Amazon to get replacements. I spoke with Amazon and they were nice enough to send me a replacement first since I was still using the fans. While I was waiting for the replacements I was playing with the fan curves and found another range between 1470 to 1490 RPM that would produce the same tone just a bit louder than 1170 RPM. But each fan had it's own loudness for the 400Hz tone. Some would be pretty quiet and some would be very loud. Today the replacements arrived. I plugged them in individually. Set the PWM so they spun around that 1470 to 1490 RPM range and they all produced the same tone with the same behavior that some were louder than others. I had to play matchmaker to find the 5 best of the 10 fans to keep and send back the other 5. I might just end up getting a complete refund for these fans. If these fans didn't produce the tone I would've been happy for the amount of air being moved around vs the turbulent air noise. As mentioned at the top of the review some of these fans spin up to 1900 RPM but they all at least spin at 1800 RPM. Included in this review is a video recording of one of the fans producing the tone just under 400 Hz that starts at 0:15 until 0:27. Then for a second time starting around 0:45 until 1:04. The audio was edited for a +20 dB gain from the original recording. There is also two additional screenshots of the audio frequency graph showing the tone being produced and the not.;;Reviewed in the United States on September 21, 2019;;1.0 out of 5 stars;;10 Fans out of 10 Have an Audiable Tone Issue at a Certain RPM Range;;Rob;;;These did make a substantial difference in the performance of both my 120mm and 240mm radiators. I had previously used highly rated standard fans on push/pull, but throttled down for noise. These I use at 100% speed - and they are almost completely silent! There are a few fans rated slightly higher, but at 2 to 3 times this price (I bought the pack of 5). I liked them so much that I converted all my case fans to these. Note: these "pressure optimized" fans are substantially quieter than the Arctic "standard" models also shown here, despite identical manufacturer's dB ratings.;;Reviewed in the United States on March 7, 2019;;5.0 out of 5 stars;;modern fan technology!;;brownil;;;I am pleasantly surprised with this purchase. The order for fans is because cooling was what the computer was missing. Five fans optimized for static air pressure, sounded great. The fans are whisper quiet. The power cord is a reasonable length. The surprise came when I noticed the male/ female coupling connectors. All five fans can be coupled to run from one (1) power source. That is a very nice feature. The set also comes with mounting screws. They have to cut their own grooves but come in handy. This is a good economic purchase.;;Reviewed in the United States on March 4, 2019;;5.0 out of 5 stars;;Good functional bargain;;L. Comer

Shipping

This product includes free shipping to all US addresses.


Delivery

Orders placed now will arrive in 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Top Amazon Reviews


5.0 out of 5 stars
By Bob - Reviewed in the United States on March 5, 2020
Impressive Silence!
Update: I bought a 5 pack of the PWM PST fans. They are just as amazing. My current setup is 3 silent Arctics that run at a static 1050 rpm. Two 120 PST Arctics on a NH-D15 cooler and one more as an exhaust fan. I was able to review the Arctic P12 Silence version of this fan. It is a 3 pin, fixed rpm of 1050. As someone who has purchased many cooling products based on recommendations only to be disappointed, let me say silence is subjective. I would say my bar is higher than most. I do have quite a collection of Noctua products. While I believe they are the best in the quiet department, their price tag can be a barrier to many. When I saw these Arctic fans, their price, and their reviews, I was curious. What makes a fan quiet? Some people assume it's all about rpm (speed) and any fan can be quiet if you run it slow enough. This is completely false. Bearing noise and motor noise is among the biggest causes of noise. Take the Cooler Master Fan Pro, even at 400 rpm, the bearing noise is offensive. They actually sound better at higher speeds as the air noise masks the bearing buzz. Noctua's secret sauce is their SSO bearing, which is a tuned Fluid Dynamic Bearing. These are among the quietest and usually demands a premium price. This includes both Noctua and Be Quiet! I was surprised to see that Arctic was able to put a Fluid Dynamic Bearing in a fan that cost a third of the price. What's the verdict on the Arctic P12? They are among the quietest I've heard. There is no bearing or motor noise, none! The air noise is also minimal and pleasant. Only noticeable at 10 inches or less to my ears. Matching the rpm to my collection of Noctua fans, Arctic wins in that department. The Arctics also move a comparable amount of air, but I'd give the nod to Noctua. Where does Arctic skimp out? Noctua has a sleeved cable, the P12 does not. The cable is all black, but is not sleeved. This would be a no-no in a premium fan, but is easily forgiven in a fan this price. I would also say the density and weight of the plastic is slightly below Noctua and even Thermalright. It's not poor, it's not cheap looking like OEM fans, just a step down. Most people won't notice, once the fan is installed, you won't be touching it for years anyway. Overall, the solid black scheme is attractive and will fit in most builds. My conclusion is I won't be spending more money on Noctua anytime soon. Sorry Noctua. They are an amazing product and are superior. When Arctic costs so little, paying for that difference is hard to justify. Buy Arctic for sure. Thank you for reading to the end and please help me out by pressing that helpful button.

1.0 out of 5 stars
By Rob - Reviewed in the United States on September 21, 2019
10 Fans out of 10 Have an Audiable Tone Issue at a Certain RPM Range
I initially ordered one 5 pack of the Arctic P12 PWM PST to get up to date with PWM controlled fans for my two 240mm radiators. These fans spin smooth and have a nice RPM range. But as I started to setup the fan curve I noticed an whining sound initially around 1170 RPM. The fans would produce a tone just under 400 Hz. At first I thought it was an issue daisy chaining four fans to one PWM header so I separated them into new pairs and adjusting the curve so it would rarely stay in the 1170 RPM range the fans were now fine... until it needed to ramp above and below 1170 RPM where you would hear it for a brief second. I thought the problem with this tone being produced was these fans are installed in the pull position, but testing it further it can happen in the push position and freely spinning with no obstruction or resistance to the fan. A ticket was opened with Arctic to bring up the problem and the solution to it was possibly the fans were defective and since I was still in Amazon's 30 day policy I should contact Amazon to get replacements. I spoke with Amazon and they were nice enough to send me a replacement first since I was still using the fans. While I was waiting for the replacements I was playing with the fan curves and found another range between 1470 to 1490 RPM that would produce the same tone just a bit louder than 1170 RPM. But each fan had it's own loudness for the 400Hz tone. Some would be pretty quiet and some would be very loud. Today the replacements arrived. I plugged them in individually. Set the PWM so they spun around that 1470 to 1490 RPM range and they all produced the same tone with the same behavior that some were louder than others. I had to play matchmaker to find the 5 best of the 10 fans to keep and send back the other 5. I might just end up getting a complete refund for these fans. If these fans didn't produce the tone I would've been happy for the amount of air being moved around vs the turbulent air noise. As mentioned at the top of the review some of these fans spin up to 1900 RPM but they all at least spin at 1800 RPM. Included in this review is a video recording of one of the fans producing the tone just under 400 Hz that starts at 0:15 until 0:27. Then for a second time starting around 0:45 until 1:04. The audio was edited for a +20 dB gain from the original recording. There is also two additional screenshots of the audio frequency graph showing the tone being produced and the not.

5.0 out of 5 stars
By brownil - Reviewed in the United States on March 7, 2019
modern fan technology!
These did make a substantial difference in the performance of both my 120mm and 240mm radiators. I had previously used highly rated standard fans on push/pull, but throttled down for noise. These I use at 100% speed - and they are almost completely silent! There are a few fans rated slightly higher, but at 2 to 3 times this price (I bought the pack of 5). I liked them so much that I converted all my case fans to these. Note: these "pressure optimized" fans are substantially quieter than the Arctic "standard" models also shown here, despite identical manufacturer's dB ratings.

5.0 out of 5 stars
By L. Comer - Reviewed in the United States on March 4, 2019
Good functional bargain
I am pleasantly surprised with this purchase. The order for fans is because cooling was what the computer was missing. Five fans optimized for static air pressure, sounded great. The fans are whisper quiet. The power cord is a reasonable length. The surprise came when I noticed the male/ female coupling connectors. All five fans can be coupled to run from one (1) power source. That is a very nice feature. The set also comes with mounting screws. They have to cut their own grooves but come in handy. This is a good economic purchase.

Recent Reviews


5.0 out of 5 stars
By Bob - Reviewed in the United States on March 5, 2020
Impressive Silence!
Update: I bought a 5 pack of the PWM PST fans. They are just as amazing. My current setup is 3 silent Arctics that run at a static 1050 rpm. Two 120 PST Arctics on a NH-D15 cooler and one more as an exhaust fan. I was able to review the Arctic P12 Silence version of this fan. It is a 3 pin, fixed rpm of 1050. As someone who has purchased many cooling products based on recommendations only to be disappointed, let me say silence is subjective. I would say my bar is higher than most. I do have quite a collection of Noctua products. While I believe they are the best in the quiet department, their price tag can be a barrier to many. When I saw these Arctic fans, their price, and their reviews, I was curious. What makes a fan quiet? Some people assume it's all about rpm (speed) and any fan can be quiet if you run it slow enough. This is completely false. Bearing noise and motor noise is among the biggest causes of noise. Take the Cooler Master Fan Pro, even at 400 rpm, the bearing noise is offensive. They actually sound better at higher speeds as the air noise masks the bearing buzz. Noctua's secret sauce is their SSO bearing, which is a tuned Fluid Dynamic Bearing. These are among the quietest and usually demands a premium price. This includes both Noctua and Be Quiet! I was surprised to see that Arctic was able to put a Fluid Dynamic Bearing in a fan that cost a third of the price. What's the verdict on the Arctic P12? They are among the quietest I've heard. There is no bearing or motor noise, none! The air noise is also minimal and pleasant. Only noticeable at 10 inches or less to my ears. Matching the rpm to my collection of Noctua fans, Arctic wins in that department. The Arctics also move a comparable amount of air, but I'd give the nod to Noctua. Where does Arctic skimp out? Noctua has a sleeved cable, the P12 does not. The cable is all black, but is not sleeved. This would be a no-no in a premium fan, but is easily forgiven in a fan this price. I would also say the density and weight of the plastic is slightly below Noctua and even Thermalright. It's not poor, it's not cheap looking like OEM fans, just a step down. Most people won't notice, once the fan is installed, you won't be touching it for years anyway. Overall, the solid black scheme is attractive and will fit in most builds. My conclusion is I won't be spending more money on Noctua anytime soon. Sorry Noctua. They are an amazing product and are superior. When Arctic costs so little, paying for that difference is hard to justify. Buy Arctic for sure. Thank you for reading to the end and please help me out by pressing that helpful button.

1.0 out of 5 stars
By Rob - Reviewed in the United States on September 21, 2019
10 Fans out of 10 Have an Audiable Tone Issue at a Certain RPM Range
I initially ordered one 5 pack of the Arctic P12 PWM PST to get up to date with PWM controlled fans for my two 240mm radiators. These fans spin smooth and have a nice RPM range. But as I started to setup the fan curve I noticed an whining sound initially around 1170 RPM. The fans would produce a tone just under 400 Hz. At first I thought it was an issue daisy chaining four fans to one PWM header so I separated them into new pairs and adjusting the curve so it would rarely stay in the 1170 RPM range the fans were now fine... until it needed to ramp above and below 1170 RPM where you would hear it for a brief second. I thought the problem with this tone being produced was these fans are installed in the pull position, but testing it further it can happen in the push position and freely spinning with no obstruction or resistance to the fan. A ticket was opened with Arctic to bring up the problem and the solution to it was possibly the fans were defective and since I was still in Amazon's 30 day policy I should contact Amazon to get replacements. I spoke with Amazon and they were nice enough to send me a replacement first since I was still using the fans. While I was waiting for the replacements I was playing with the fan curves and found another range between 1470 to 1490 RPM that would produce the same tone just a bit louder than 1170 RPM. But each fan had it's own loudness for the 400Hz tone. Some would be pretty quiet and some would be very loud. Today the replacements arrived. I plugged them in individually. Set the PWM so they spun around that 1470 to 1490 RPM range and they all produced the same tone with the same behavior that some were louder than others. I had to play matchmaker to find the 5 best of the 10 fans to keep and send back the other 5. I might just end up getting a complete refund for these fans. If these fans didn't produce the tone I would've been happy for the amount of air being moved around vs the turbulent air noise. As mentioned at the top of the review some of these fans spin up to 1900 RPM but they all at least spin at 1800 RPM. Included in this review is a video recording of one of the fans producing the tone just under 400 Hz that starts at 0:15 until 0:27. Then for a second time starting around 0:45 until 1:04. The audio was edited for a +20 dB gain from the original recording. There is also two additional screenshots of the audio frequency graph showing the tone being produced and the not.

5.0 out of 5 stars
By brownil - Reviewed in the United States on March 7, 2019
modern fan technology!
These did make a substantial difference in the performance of both my 120mm and 240mm radiators. I had previously used highly rated standard fans on push/pull, but throttled down for noise. These I use at 100% speed - and they are almost completely silent! There are a few fans rated slightly higher, but at 2 to 3 times this price (I bought the pack of 5). I liked them so much that I converted all my case fans to these. Note: these "pressure optimized" fans are substantially quieter than the Arctic "standard" models also shown here, despite identical manufacturer's dB ratings.

5.0 out of 5 stars
By L. Comer - Reviewed in the United States on March 4, 2019
Good functional bargain
I am pleasantly surprised with this purchase. The order for fans is because cooling was what the computer was missing. Five fans optimized for static air pressure, sounded great. The fans are whisper quiet. The power cord is a reasonable length. The surprise came when I noticed the male/ female coupling connectors. All five fans can be coupled to run from one (1) power source. That is a very nice feature. The set also comes with mounting screws. They have to cut their own grooves but come in handy. This is a good economic purchase.