Is the NZXT 140RB (140mm rifle bearing) a good fan?
Its a cheap fan here in Sweden, only 10-12$, but since its basically just a 140mm version of the ones in the Nzxt H2 i wouldnt really call it a good fan.
The 140mm space is not as good as the 120mm but i think its widely accepted that the Thermalright, Noctua and Prolimatech 140mm fans are good when undervolted. I tried the 140mm Prolimatech horizontally mounted and it made a chatter noise which is problably because sleeve bearing fans arent good for horizontal mounting.
I wish you good luck.