Thermaltake 120 mm Riing RGB 3 pack for $39.99 at Best Buy
These are the same rgb fans I just bought for my build. They have a few major drawbacks, but at this price , those are easy to overlook, especially if you have any other best buy discounts. They'll work in any computer, which is a plus - they don't need an rgb header on your motherboard or anything like that. They come with everything they need except power, which you get from your motherboard. On the other hand, that means you have to have their proprietary controller to use them, and there's no syncing with any other lights in your case. And the biggest annoyance is that they can't be controlled by, software. You're again limited to the little box unless you are comfortable with a soldering iron and you've got a spare Arduino lying around (one of my future projects). My understanding is that the box also controls the fan speed despite them being PWM fans that are basically designed for being able to respond to temperature changes when plugged directly into th...