Thermalright TL-C12015B 120mm Slim Fan, 15mm Thick, PWM Control, 1800RPM, High Performance Slim Fan

Dateline: A Tiny PC Case, a Space Where Every Millimeter is a Battlefield, 4:07 AM. There is a special kind of madness that drives a man to build a computer inside a box the size of a shoebox. It is a high-stakes game of inches, a brutal, three-dimensional chess match against the unyielding laws of physics. Your greatest enemy in this tiny, hot-box world is heat, and your greatest challenge is finding a fan that can fight it without demanding a space you simply do not have. Standard 25mm fans are bloated, arrogant things in this domain. They are clumsy bulls in a china shop of miniaturized components. You need something specialized. Something lean, mean, and built for the trenches. You need the Thermalright TL-C12015B Slim Fan. This is not just a fan; it is a miracle of engineering. A scant 15 millimeters thick, it is a wafer-thin sliver of high-performance potential. When you hold it, you expect it to be flimsy, a fragile piece of plastic compromise. But it is not. It feels solid, premium, a dense and well-built tool that belies its skeletal profile. But the real shock comes when you power it on. For something this thin, you expect a polite, anemic puff of air. What you get is a hurricane. This slim blade moves a shocking, almost unbelievable amount of air. It’s a testament to some kind of aerodynamic black magic, a full-sized fan’s performance packed into a low-profile chassis. It’s the quiet, powerful engine that makes the impossible, high-performance ITX build a reality. In the cramped, claustrophobic guts of a small form factor case, where a heatsink is fighting for space with a RAM stick and a cable is threatening to choke the life out of your airflow, this fan is your secret weapon. It fits where others cannot. It brings a rush of cool, life-giving air to components that would otherwise be gasping for breath, thermally throttling themselves into a state of pathetic submission. And the value… the value is the final, beautiful punchline. In the boutique world of SFF building, where specialized parts often carry an absurd, "enthusiast" price tag, the Thermalright slim fan is a breath of fresh, affordable air. It delivers top-tier performance and solid build quality for a price that feels like a gift. This is not just a good fan; it is an essential piece of kit for anyone brave or foolish enough to venture into the world of ITX builds. It is the problem solver, the space saver, the silent, powerful engine that keeps your tiny, beautiful creation from melting itself into a puddle of expensive slag. A highly recommended, five-star champion for the small-box warrior.

I’ve used these on several ITX/SFF builds lately and it’s the best contender for slim 120mm fans in terms of price, performance, and noise. Very quiet on startup. I’ve used them as case fans and CPU fans. I’ve mounted them using screws and clips. Very versatile fan.

With the price of fans getting outrageous, these are the best. No the are not PWM, but with "Fan Control" software they work really well and are quiet.

Works well with a formD t1 case itx.

I actually liked this fan in the beginning. It is able to pull a good amount of air though a grill even at 1200 rpm (66%). But it's been less than a month working for a couple of hours every other day or less, (according to logs total uptime for the period was 57 hours) and was never ran above 1450 rpm (80%) and the bearings are already crapping out, making squeaking and grinding noises. The fan is still turning, but I can't trust it any more. And of course, it is just couple of days past the return period Update - dropped this to one star as Thermalright have no support/warranty - their website instructs to go to support.Thermalright.com (link points to Corsair support) which does not exist to set up RMA. Corsair (where the link pointed to) said they have no idea why Thermalright would do so. So you are out of your money when this fails after the 30 days return period. Just to note - the only way to contact support is via email. The website is broken

Replacement fan for Fovomi wine fridge. Needs a slim fan, but not 4 wire pwm. Cut connector and use only 2 wires for full speed. Standard 120mm size holes fit without issue. So far, so good.

I purchased the Thermalright TL-C12015B exactly 1 year and 15 days ago and the fan has failed last night. It started making awful blade striking sounds on the frame. This was my first experience with Thermalright products and it definitely doesn't give me any strong impressions that they are at least decent quality. I've never had a fan only last one year. My Arctic P12 fans from 5+ years ago and still running flawlessly.

fan is okay, quiet for how thin it is but be careful, the hub where it mounts to the fan is really flimsy and can break easily

very nice fan and it is slim and functonal and really quiet too.

Fans work as intented. But the price dropped by 31% just a day after my order shipped. Worth it when it is below $18.