The radiator gasket seems like a good idea. PWM control works perfectly, allowing the fans to spin down to inaudible RPM levels when your system is lightly loaded. This translated into a quieter system when the CPU load was not maxed out. In terms of noise, the improved airflow from the NF-A12 fans kept the CPU cooler longer so the RPMs didn't need to ramp up as much. Finally, on the HWLabs Nemesis GTX 240, replacing two Noctua F12s with the A12 reduced CPU load temps by 7C. On a Arctic Freezer 120, I replaced the push fan and CPU temps dropped 5C at load. On a Fractal Designs S36, simply changing out the stock (pretty good, actually) fans for three NF-A12s reduced CPU load temperature by 10C and was quieter as well. So far, I've tried them orn two AIO coolers and one HW Labs 240mm radiator. Slap these babies on a radiator, however, and the difference is significant indeed. Using the NF-A12 as a case exhaust fan would be a waste of your hard-earned cash. The fan does blow reasonable air amounts in unrestricted locations, but the difference between the NF-A12 and the older S12 is not enough to warrant the cost. You'll see the most benefit when the NF-A12 is used on a radiator, CPU heatsink, or other restricted airflow location. So far, I have swapped the existing fans on two systems and achieved better cooling and lower noise in the process. I really don't even mind the Noctua brown color scheme, the performance is so impressive. This fan, at 2000rpm, it noticeably quieter than the other fans at 1500 rpm. For reference, I've also got a NF-F12 and two NF-A14's in the same case, all PWM controlled. So I went into the fan control software and manually set the fan to max speed and I was awestruck by how quiet it is. That's incredible.Īfter I swapped the coolers/fans I ran the Asus Fan Suite tuning utility, and I was expecting to hear the fan roar as it ramped up to full speed, but I didn't notice any noise really. I replaced a NH-D15S with a single fan, with a NH-U12S running one of these, and I've noticed hardly any difference in temps/noise. Overall Review: I'll try to keep this short. Pros: One of these fans mounted on my NH-U12S matches the performance of TWO NF-F12's mounted on the same cooler.Īt max speed (2000rpm) this fan is objectively quieter than a NF-F12 at it's max speed of 1500 rpm.Ĭomes with all the Noctua accessories in the box, including a cool gasket for creating a better seal when mounting to a radiator.Ĭons: Only available in the standard Noctua colors, and only available in 120mm so far. Its superior efficiency, cutting-edge construction and pioneering materials make it an elite choice for the most discerning demands. Topped off with exceptional running smoothness, Noctua’s reference-class SSO2 bearing and a rich bundle of accessories, the NF-A12x25 is a premium-quality product through and through. The 3-pin FLX version provides 2000/1700/1350rpm speed settings via the supplied Low-Noise Adaptors so as to give full flexibility in configuring the fan for maximum cooling capacity or near-silent acoustics. Following the approach of Noctua’s A-series, the NF-A12x25 is a true all-rounder that yields superb results in all types of usage, regardless of whether it’s in low-impedance, airflow-oriented applications such as case cooling, or high-impedance, pressure-demanding scenarios such as on heatsinks and watercooling radiators. It takes state-of-the-art technologies such as the AAO (Advanced Acoustic Optimisation) frame or Flow Acceleration Channels and combines them with a record tight tip clearance of only 0.5mm, which is made possible by using the novel Sterrox liquid-crystal polymer (LCP) compound as well as a metal-reinforced motor hub and axis for ultimate precision. The NF-A12x25 is a highly optimised next-generation 120mm fan that integrates Noctua’s latest innovations in aerodynamic engineering in order to achieve an unprecedented level of quiet cooling performance.
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