












❄️ Keep your cool with the fan that means business — silence, speed, and power in perfect harmony!
The Thermalright TL-B12 Extrem is a high-performance 120mm PWM CPU and case fan boasting an industrial-grade 3150 RPM speed, delivering up to 112 CFM airflow while maintaining ultra-low noise levels at 40.5 dBA. Featuring advanced three-time dynamic balance correction and vibration-absorbing pads, it ensures silent, efficient cooling. Its smart 4-pin PWM control adapts fan speed based on motherboard temperature, making it ideal for demanding gaming rigs and professional workstations seeking reliable, long-lasting thermal management.












| ASIN | B09CH1PPY4 |
| Air Flow Capacity | 82 Cubic Feet Per Minute |
| Best Sellers Rank | #481 in Computer Case Fans |
| Brand | Thermalright |
| Compatible Devices | Desktop |
| Cooling Method | fan |
| Date First Available | August 12, 2021 |
| Item Weight | 0.01 ounces |
| Item model number | TL-B12 EXTREM |
| Manufacturer | Thermalright |
| Material | Polyolefin |
| Maximum Rotational Speed | 3150 RPM |
| Noise Level | 40.5 Decibels |
| Number of Items | 1 |
| Power Connector Type | 4-Pin |
| Product Dimensions | 4.72"L x 0.98"W x 4.72"H |
| UPC | 742346951720 |
| Voltage | 12 Volts |
| Wattage | 2 watts |
S**A
These are the best computer fans ever seriously!
I built my first PC back in May. I bought a few of these fans and several other fans from four other places to try to figure out which ones would be the best by far buy a longshot for several reasons. These are far away the best computer fans I’ve ever seen barely heard because they don’t make a sound or used. They also come with these little rubber, grommet things that go on the corners. I’m assuming to keep down the noise, but they’re so unnecessary because they’re super quiet really easy to attach is a matter of fact the moment I put one in my hand and kind of flick the blades around I knew they were gonna be good because they were super well balanced. I ended up putting 15 of these in my computer case and shockingly. My Nvidia. GPU fans were louder, and they are barely making any noise at all the sound you’re here is just the wind wooshing out of the back of the computer case. Also, they are extremely powerful. I believe up to 3000 RPM. They knock the temperature down 20°C in about 30 seconds so whenever my CPU or my GPU got to 40° the jump from 50% power to 75% power knocked the temperature down extremely quick. Originally, I just had one of these ones in the back up top and one in the front up top and then some lesser powered ones throughout the inside to avoid getting any negative air pressure worked great once I had returned the other ones I didn’t like and I just got a whole bunch more and I’ve been so happy ever since. I mean, I can’t even believe I’m writing this long review over a computer fan but much like cell phone cases. It’s just funny to me how you can spend $100 on a cell phone case that’s supposed to be the best and it’s just not as good as the $15 one and these fans are really reasonably priced. I definitely think it’s the most fair price for the best quality I could’ve easily spent an extra $27 per fan to get some Noctuas but there would be no point other than just wanting to show off a label and I would like to add that I did buy one Noctua fan was not anywhere near as good. Lastly, I’ve had these since May. I wanted to wait a nice long time to give a nice fair review. All of them work perfectly still have had zero problems. Some of the other fans I had started making noise rattling broke down not these ones oh and I guess really lastly lastly delivery time was really fast sellers awesome so super appreciated. Thank you so much for all your first time PC buyers out there. At least you know you can buy these and it’s one less little bit of stress. you have to worry about do yourself a favor and by at least none of these if you’re getting a high and CPU and GPU at the very least it’ll keep everything nice and cool especially in case your GPU fan stopped working or your cooler fan stopped working. These fans will take care of all of that.
B**S
Best fan I’ve ever owned
Cooling enthusiast here. I’ve been a huge fan of thermalrite’s first version of this specific fan for a while now, they are cheap, clean, quiet and move tons of air. Needless to say I was exited to see that they made this version. It’s everything I liked about the original fan with one key improvement, speed. It now can rotate up to 3100 rpms and move an insane amount of air, it still works at the normal speeds too which I recommend, 3100 is loud af and kinda scary but that’s the best part. Thermalrite is really out here making fans for the people. Other companies should take notes. I plan on testing these in a server to see how long they can last at max rpm so this review may change at a later date,but the score will stay the same. These fans are the best.
C**R
Fast and loud if not tamed by a good fan curve.
Maybe it is my Corsair CommanderXT and case (Y70) but these fans never reach 3K RPM, I get about 2,600RPM on a radiator on intake. I also tried using a powered fan hub still got the same speeds. The minimum is about 550 RPM and they ramp up quickly with the PWM %. The tone when they become audible (about 800RPM ) is a high pitched motor noise that overcomes the wind noise. With six of them on a 360mm radiator it can be very annoying but move a lot of air. The fans feel heavy for their size and their construction feels sturdy. I liked the inclusion of the rubber corners in white, red, and black.
R**W
Not the most quiet - but super effective
Quiet enough under 2K RPM - but not the most quiet. But that's not why you buy a fan like this. For what it is - it is an amazing value and moves a ton of air.
A**D
Powerful, Not That Loud
This is an INDUSTRIAL GRADE fan, it is NOT necessarily designed to for the typical consumer that needs a fan for normal PC use. With that said, the noise complaints are overblown, and this fan's RPM and powerful blades can push A LOT of air! It is easily my most powerful fan and I have it directly blowing across my CPU, RAM, and just above my GPU. I wish I had bought two of these fans to place in the front of my case, but I have already have a surplus of fans and haven't unlocked that unlimited money cheat yet.
J**E
Literally The BEST Fans on Amazon
If you were looking for the best cooling possible, These fans are it. They Spin at a max of 3000 RPM. That’s like 30%+ more than the average fans you’ll find of the same size, usually double the price of these too. Simply put, They are very loud, but it’s only because they perform at the highest level. If you need extremely powerful fans for whatever reason, These are for you. Not to mention that you can tune the fan levels with your bios on PC. They’ve made a huge difference in my set up. One last thing, I have no idea what they’re called, but I absolutely love the mounting screws and nuts included. If it wasn’t for them, my PC would’ve been a disaster right now. This is all I wanted.
N**A
Yes their loud
These move alot of AIR, and it has great static pressure for radiators. lots of extras for your built. but the advertised speed of 3150rpm is false they seems to top off at 2850rpm, with that in mind i was able to keep my 13700k about 4-5c cooler than the stock fans that came with the arctic LF3 360aio. thats while running 10min OCCT benchmark pl1 225w and 255w pl2.
C**N
Loud, but as long as you go into it knowing that...
It's loud at full blast. Pretty much the loudest fan I have aside from server-grade Delta fans. Thankfully it's power draw is still low enough that you can use smart FAN control to set up a fan curve that keeps noise down except for high load.
P**M
Faster speed than the one I am replacing on my Thermal Right Frozen Edge 240mm AIO so I ordered a second one so both fans will match speeds. Never had any issues with their products.
S**2
moves alot of air at low rpms making it more suitable for pc cases
趣**森
トップフロー式でCPUを冷却するフアンは中々ない中、これを見つけてしまった!120㎜ファインで3150RPMは魅力的だ。JF13K DIAMOND WHITEのファン2個をこれに交換して使用、マザーボードUPU周辺も冷却出来てUPU温度上昇も緩やかな感じ、長期使用PCなら有利かと。
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