Prolimatech Compatible Ultra Sleek Vortex, Schwarz - 140mm

The fan, it moves a good amount of air (rated somewhere in the 90cfm feels more like in the 50cfm range.*) but it's absolutely silent, or as silent as a thing with many spinning blades can be.The downside is it's low static pressure, so if you are thinking of using this as a cooler fan, either on an air cooler or radiator, it;s going to be less than stellar for you. At fin densities 2mm or less look for a fan with at least 1.2 or higher static pressure (this fan is rated at .92.) at fin densities of 4mm or more it'll do fine.Or if you are trying to cool a less thermally dense processor this will do the trick.I had this attached to a BeQuiet DarkRock4 (2mm fin spacing.and 200W TDP) to cool a Ryzen 7 1700x and 2700x and it worked swimmingly. Under full folding@home and Boinc load over 24 hours temps never exceeded 58cSwitching to a Ryzen 9 3900x things started to fall apart temps rose to 72c to get things back under control I had to add back in the BeQuiet Silent Wings fan on the back in a pull configuration with that temps dropped to 69c.Switching to a Ryzen 9 3950x, well things went all to hell. could not get full load under 85c (granted it's still within the thermal limit of the Ryzen 90c, but I like cold.)So I switch out to a DeepCool Assassin which brought the temps down to 80c. Since the Assassin fin spacing is 4mm, and the fans it comes with are LOUD under full speed I put in these fans and they performed quietly and kept temps down. However the Assassin's mounting is Schisse (cant work with 15mm thick fans) I eventually swapped out for the BeQuiet Silent Wings 3, moves same amount of air at a higher static pressure (1.4mm) and only slightly louder than the Prolimatech. and at 25mm they mount securely.So the takeaway, is quiet - perhaps the quietest fan I've seen. Moves about an average amount of air (between 50 and 60 cfm) but at a low static pressure, which is bad a tight fin spacing and high thermal densities. Works fine on low fin density and high thermal load, or low thermal load and high fin density. And from what I've seen is one of the best performing slimline fans I've tested so far in the 140mm class.Granted I've not had the opportunity to test the CryoRig 140mm slimline fan that purports to have higher static pressures since right now it's ungodly expensive.*As tested against my Xigmatek XLF140, I use this a a benchmark as it's 16db, and runs at 1 speed. (full) and has an ungodly high static pressure at 63.5cfm

The title says it mostly. The narrow profile saves room in my box and the air movement is good. The fan is very quiet at 50% of max RPMs. But if you crank it up to 100% it gets pretty noisy compared to other fans. I've got a total of 7 fans in my box and this is by far the noisiest of all at 100%, by a wide margin. At 50% it blends in just fine. Since my box runs pretty cool it rarely kicks in above 50% so not a problem for me. At least it lets me know when my processor is warming up since I have it plugged into one of my PROCFAN connectors.

This replaced a Scythe 120mm x 10mm Sleeve Bearing Fan that barely lasted a year, which was mounted horizontally on a Cooler Master GeminII CPU cooler, which likely shortened the life. It was the best I could find at the time... Recently, the Scythe was making the "death rattle" and after a bit of searching, I happily found the Prolimatech Ultra Sleek Vortex Fan! It has met every requirement I had originally been searching for. And, because it sits on top of a flat surface. the extension of the fan to 140mm was not a problem and provides a bit more airflow on the board chipset. The PC is in a SFF case with a SFX power supply sitting partially over the CPU cooler inside of a semi-enclosed desk. In that environment, this fan kept the CPU (an AMD FX-4100) under 60 degrees C for 10 hours of Prime95. I cannot praise it higher than that, and it did it in relative silence!

I bought this to be an added on fan to my case. I liked its round shape and it's slim 15mm thickness. It worked perfectly for what I wanted it for! Sadly, the reason I give it ⭐️⭐️ is because it's loud! At full speed it can get up to 1100rpm (100 more rpms then listed) but you can hear it a mile away. The only way I was able to lower the sound was by lowering the speed. In order to get to a point where I could barely hear it I could only have it running at 600rpm. That's a loss of about 45% leaving it running at about 55% of its full potential just because it is so loud. I'll probably end up keeping it because of it's shape and size (apparently no other company makes 140mm fan in a 15mm thickness)

Needed a 15 mm thick fan for a Corsair H80i liquid cooler. This fan really puts out the air and quietly. Seems equivalent to the second 25 mm 120 mm that comes with the H80i. Plus its 140 mm delivers more than enough extra air to cool the itx m/b components effectively in a Silverstone SG05BB "shoe" box.. I would recommend this fan even if thickness is not a factor. Bear in mind that air flow goes up as the SQUARE of the diameter. So the extra 20 mm plus all those blades almost doubles the air flow vs. a 120 mm fan. And has same bolt hole pattern.Caveat: to fit the radiator hoses emanating from the H80i, I had to file the shroud on one side to clear the hose fittings. But the extra air flow makes it worth it.

I suggest everyone go to the Prolimatech website and look at their performance chart, the P-Q curve. It clearly states it only goes up to maybe 60cfm! If you take the 98 value and assume it is actually CUBIC METERS PER HOUR then it returns 58 cfm just like their chart suggests. I bought this fan thinking I could replace a thicker fan with this slim fan in a tight part of the case but nope, it's only capable of like 60% of the performance I needed. I was wondering why the air felt weaker and it's because their claim of 98 cfm is nonsense! There's a review online that confirms that at around 1000 RPM, the safe rated max RPM for the USV 140mm, the fan only pushes around 60cfm, just google it.Also, it's not nearly as quiet as I expected from something under 20 dba. There's a sort of warble or uneven noise when it spins at full speed that's noticeable