Review on ARCTIC P14 PWM - 140 mm Case Fan with Pressure-optimized PWM, Ultra Quiet Motor - Fan Speed: 200-1700 RPM - Black by Steven Adams

Good 140mm PWN fans, pretty fast. Simple back. Simple fan. Secondary grips have no vibration pads, slight wobbling is acceptable when moving case-mounted fans; not as firm as noctuas. Move a decent amount of air, can't complain about the value as the fans are reasonably priced ($10-$15). The biggest problem is that all 5 of my fans are doing electrical ARCS in the center unit of the case when the fan is facing down horizontally (pull air from bottom, push up). When the fan rating exceeds a certain ampere/60% on the fan curve, a similar clicking sound and arcs will be seen in the center of the fan. This does not happen with vertical mounting, only with horizontal mounting. (I didn't try to mount the fans by sucking air in from the top and pushing it down.) I left the horizontal mount at the maximum fan speed of 59%. Vertical variables, as usual. I still own and use the fan but put a limit on it so it doesn't burn. Good quality TLDR fans in vertical position, not horizontal.