Aigodarkflash INF8 120mm ARGB PWM Case Fans with Controller for Pc Case Computer Cooling System 3Pin-5V Addressable RGB Motherboard SYNC Cooling Fan (5Packs Black)

I really like these fans because they're easy to daisy chain, they are relatively quiet, and the price is amazing. That being said, the controller it comes with isn't great, which is why I'm docking a star. It doesn't work properly with MSI MoBos. When you use the controller and plug in to a PWM slot, they still spin at full speed at all times, which is loud and annoying, and the RGB doesn't work. If you daisy chain the RGB and plug the pwm connections straight in to the MoBo, they work flawlessly. That being said, you can skip the controller all together and it's still a great price. Just make sure that you get a 3 way PWM splitter to daisy chain straight to your MoBo and you're good to go.

120mm x 120mm Argb Led Fans - 5 for $50Quality 4 Pin PWM 3 Pin Argb fan + controllerPower 12v PWM - LED 5v Argb - Snake Ability

The fans add a nice led show to a plain case

Great budget argb fans

Los ventiladores cumplen con lo prometido y lucen muy bien.