Wathai 12038 120mm x 38mm PWM Computer PC Case Fan 12V 4pin 5300rpm 230 CFM High Airflow Duall Ball CFM FG DC Brushless Cooling Fan

Great little fan. Moves a ton of air when you need it. Works with PWM 4 pin connector, but take note that this is a 2A fan. At 100% it will require a 2A pwm header, so make sure that your motherboard has one. For my MSI Tomahawk x870 board, I needed to use the CPU FAN header, which was the 2A header for my board. All other fan headers shared 1A.Make no mistake, if you're using this in your desktop It is very noisy above 50%.

Not quiet nor advertised as quiet but not terrible, especially if you use a temp control curve.Intakes a crazy amount of air and creates a lot of air pressure and velocity.Noise is not bad around 35%At 100% sounds like a jet turbine and feels like a wind tunnel, but youd probably not run at 100% unless your case temps are climbing

Okay, so, I've been using this thing for about a year and here are my thoughts.In order to use this, I bought a barrel-jack/fan connector and an adjustable fan controller that fits said barrel jack connector. Upon opening the box the first thing that you notice is the sheer girth of this unit. I mean, it feels much heavier than it should. The build quality is amazing and it runs like a top. at low speed its nearly silent and cools my mid-tower cpu case and heat-sink to a comfy 45c. I want whoever reads this to understand, I don't have a fan on my cpu heat-sink, this thing is connected to the front inside top of my case so as to suck fresh air in and blow it. It blows enough air, from that position to not only cool my heat-sink on its LOWEST setting but to also hit the fan in the back of the case. On medium, the fan sounds like what I imagine a duck hitting a airplanes turbine hears before it becomes meat shrapnel. It's just, Incredibly loud. Like, you can hear it 30+ feet away at half speed. The cooling performance though, matches the noise. I'm able to drop from 71c post Vulcan shader render to 42c in 20 seconds at half speed. Now comes the complicated part. Depending on the heatsink you use, There's little to no point in using this thing past half speed. Let me explain. The heatink can only throw so much heat, and this fan moves air so fast, after half speed, it reaches a point where it just doesn't remove any more. I am able to hold a paper towel to a wall at 3 feet from the back of my case at the fans full speed though lmao. Bottom line is, It's stupid, overkill, and I'm in love, buy three. Just don't forget the adapter and external fan controller, this may kill your power supply.

After looking at several RV and truck stores we found this one here in Amazon. It took a little longer than 2 days but it went right in and worked with the fridge. Very pleased.

The media could not be loaded. I built my pc with the purpose of it being a video editing/rendering system, so I stuffed in 2 GPUs, a Ryzen 7 with water cooling and 64 Gb of ram respectively. But overlooked the thermals and wondering why I was getting around 90c after a few hours. Figured out it was the front fans the AIO came with, so I swapped those puny little fans for 2 of these 5300 RPM big boy fans, and when I turn these fans up, the CPU will never go above 72c no matter how hard my computer tries. Not only do these fans push a ridiculous amount of air, they also give you a nice little audio cue to when they are working the hardest. They can also be extremely quiet when ran at lower speeds, only slightly louder than a regular case fan. Granted, they do sound like a hair dryer or a jet engine when they are at full power, but did a little noise ever hurt anyone? 100% recommend these fans to anyone who would like ice cold thermals and isn't bothered by a bit of noise.

First, this "12V" dc fan's manual casually mentions that it can be damaged if run more than 20% above 12V rated voltage. It's *remarkably* thoughtful to design it to survive at the lead-acid car battery voltage 14.4V since most people I know call a cigarette lighter plug "12v." Now I don't need to add voltage regulation before hooking it up to to my car (or my 10 x AA Ni–MH power pack that runs between 13v and 14v)!They even include instructions on how to swap the wires in their plug if you have different polarity on your device. (I also bought the "Dual Ball Centrifugal Fan High Airflow" model from the same manufacturer, and it's equally superb, but as a "reasonable quietness outweighs sheer air flow" alternative, which also works beautifully even mounted flat against a solid surface.)I *almost* wired a PWM controller sharing the same power source, but I was in a rush so I used a simple power PWM controller as the power source instead of a constant 12V with PWM signaling speed and, while it doesn't get the fan below 50% power, that level isn't terrible if you have something else making noise in the room, so in a pinch that's an option for many projects using the fan. For those who are less comfortable with the details of electrical engineering the my amatuer self (but somehow have a 12v pulse-width modulation power regulator hanging around?), I should note that I get extremely non-linear scaling behavior using it (cut-in around 5% to 10% pulse width), ramp up to about 80% fan speed at about 25% pulse width, and the remainder of the speed is spread over the last 75% of the pulse width. As I write this, I realize the relationship is probably roughly logarithmic starting at the cut-in and I suspect (since I don't want to rip apart one of my two favorite fans of all time) there's a cap or inductor or something smoothing out my pulses before they hit the brushless motor controller IC so it's just seeing a very dirty reduced input voltage when I have a PWM wired in.At 100% speed, it's about as annoying as a vacuum cleaner (not nearly as loud, but much more piercing and distinct overtones). At half speed, the annoyance is about the same as an air window conditioner unit.I cranked it up to 100% and verified the advertised speed and discovered as some (possibly useful) characteristics. I recorded the sound of the fan and found the fundamental resonant frequency is 600Hz, which divided by 7 for the seven blades making each revolution, is about 85 Hz, or (multiplied by 60 to convert Hz to RPM is) 3600 RPM.If you are still reading, you must be looking for something wrong with it. Sorry, I can't find a single thing to complain about. :-)

I have these in a server case. One of them died on me but they cool the cards and move air nicely. When full RPMs they are loud, but not obnoxious like an 80mm server fan.**10/10/24 edit. Moving to 5 stars. Company replaced all of my defective fans. Great customer experience!