Sorry, the 5 x 120mm Thermaltake Riing PLUS 12 RGB Premium Fans with Controller PN CL-F054-PL12SW-A is no longer available

The NF-A14x25r G2 PWM Sx2-PP is a set of two NF-A14x25r G2 PWM round-frame 140mm fans for push-pull operation on heatsinks such as the NH-D15(S) or NH-U14S. When two fans operate in a push-pull configuration running at almost the same, constant speed, their acoustic interaction can lead to undesirable harmonic phenomena such as intermittent vibrations or periodic humming due to interference, which can be heard as beat frequencies.
Therefore, the two NF-A14x25r G2 PWM fans contained in the Sx2-PP set are slightly offset in speed (+/- ~25rpm) in order to avoid such phenomena.

The RGB Duo Fans strike a balance between bright style and performance with twenty individually addressable RGBs and high static pressure. 3 x White