NZXT F140 RGB Duo - RF-D14SF-B1-140 mm RGB fan - 140 mm - 20 individually configurable LEDs - balanced airflow and static pressure - PWM control - black

Really Good value, amazing rgb and looks great. The speeds are really fast compared to other fans. No problems so far. Definitly buying in the future.

The dual-sided RGB (“Duo”) gives lighting effects from both sides so you get a more even / dramatic lighting effect. The configurable LEDs and NZXT CAM support allow for nice customization These fans are reasonably good both for pushing air in open sections of the case (airflow) and for use through radiators or restricted spaces (static pressure). So they’re versatile. under light/medium loads (i.e. when you don’t need full RPM), they are fairly quiet. The included RGB controller is basic; for large setups it may run out of ports or not be sufficient for more fans. Because each fan has multiple connections (fan power + RGB), the wiring can get messy. If your case or motherboard doesn't have many fan headers or RGB headers, managing them (or routing them tidily) can be more work

Do not buy nzxt fans. You can't control the rgb lighting unless you have a nzxt motherboard or a nzxt fan controller which is another 30quid! Total joke all because they dont use the same 3 pin rgb cable that everyone else uses. Avoid.

Developed a serious wobble after only 8 hours use. Made lots of noise. Replaced luckily as was within 30 days of purchase. Be warned