Installation and Testing
Next is installation and it’s simple as I’m using it with my Noctua NH-U12P CPU cooler which uses clips to mount the fan.
The cooler is mounted on my Intel Core i7 2600K CPU on an Asus Z68 based board.
Noctua actually released three fans in the NF-S12 series and I will be comparing the NF-S12A FLX to the NF-S12A PWM fan as well as the popular NF-F12 PWM fan.
The NF-F12 PWM runs at 1500rpm top speed, while the NF-S12A PWM runs at 1200rpm and 900rpm with the low noise adapter in use. The NF-S12A FLX runs at 1200rpm, 900rpm with the low noise adapter and 700rpm with the ultra low noise adapter.
For testing I used Orthos Stress Prime to get load on the CPU and the ambient room temperature during testing was 24.5C (+/- .3C).
I tested the NF-S12A FLX fan using it just connected to the fan header of my motherboard and then with both of the adapters.
So here’s a nice chart for you showing the temperatures of the fans on the cooler:
The idle temps are all fairly close, but at load and the FLX fan on full speed we see the NF-S12A FLX drops the temp by about two degrees, which is pretty good and could mean the difference between a successful overclock and not.
At full speed the S12A FLX only runs at 1200rpm which is fairly slow I think and it doesn’t product any more noise than any of the other fans I used for testing. I noticed no additional noise added to my system using the NF-S12A FLX at any speed.