Noctua NH-D15S, Premium Dual-Tower CPU Cooler with NF-A15 PWM 140mm Fan (Brown)

Product Information

If we installed a 2 nd fan, the D15S might even surpass an AIO. So, if you are after the highest possible performance and feel you must have an AIO to attain it, think again. The box for the Noctua NA-HC4 chromax.white maintains the same aesthetic as other Noctua product boxes and displays the compatible heatsink model numbers on the front. However, even more impressive is our 79° temperature during 100% load! Just as with our idle temperatures, the D15S stayed in range of a high-quality 240mm liquid cooling unit, no pump noise necessary! Now, let’s pull out this heatsink and take a look. I took this picture upside down, so let’s see the NH-D15S rightside-up. Yup. It is definitely asymmetric.

Looking at our results, we see that three fans cool no better than two fans, with substantially more noise. Comparing the pair of 1200 rpm A15’s to a single 1500 rpm A15 shows that the pair of 1200 rpm A15’s cool this heatsink about the same as the single 1500 rpm A15 cools it, but more quietly (Not that the NF-A125 1500 was all that loud). The Noctua NH-D15S is a fantastic value. Yes, it’s a bit more expensive but it’s well worth the investment. Not only does it rival AIOs in performance, it does so while maintaining a much lower noise profile. Plus, this heatsink can be carried over every time you upgrade or rebuild your computer. Lastly, Noctua brings a level of quality to the table that few manufacturers can match. The NH-D15S is no exception and its 6-year warranty is among the highest in the industry. We utilized an Intel Core i7-10700K for this test and used the factory CPU settings of 3.8GHz at 100% load to put the cooler to the test. The second and third tests were performed with an OC stage of 4.7GHz and 5.0GHz, respectively. We wanted to see how well the Noctua NH-D15S performed in standard and high-end OC modes.NH-D15S vs NH-D15.The first chart below appears to show that the NH-D15S cools 3 °C better than the NH-D15. Relax. What this chart shows is that when you mount heatsinks, your mounts can vary. In fact, you are well-advised to mount and test your cooling, then remount and retest. Stop only when you have arrived at a really good mount. In essence, I tried to do all the things you might find logical to try. I used two different mounts to compare the cooling. I mounted the NH-D15S a third time with the fans blowing up – I had recently tested the NH-C14S heatsink and found a 5 degree difference in cooling, depending on how I mounted it. So I tried this vertical mount to see if it made a difference in how well the D15S cooled. The results are presented in different charts to keep the different mounts separate.

Those two threaded rods were for the tensioning screws. Noctua provides an L-shaped screwdriver for tightening the tension bolts. However, you would do well to get a 200mm long-shaft #2 Phillips screwdriver. Very helpful for this and for tightening motherboard screw deep in a case. You want extra RAM clearance: If you have high-profile RAM modules and need a cooler that provides ample clearance for your RAM slots, the Noctua NH-D15S is an excellent choice due to its asymmetrical design.Noctua heatsinks have long been revered for their top-tier cooling abilities and quiet operation but their understated design and their brown fans specifically, are occasionally the subject of ridicule among PC builders who value aesthetics above all else. The stress tests were carried out with AIDA64 Extreme. We went with the Thermaltake View 71t instead of an open-bench setup. Three intake fans are located in the front of the Thermaltake View 71t, while one exhaust fan is located at the rear. Attach the fan to the cooler as previously, making sure it is facing the desired direction ( airflow arrows can be seen on the side of the fan). Connect the fan to the 4-pin PWM connector once it’s been installed.