Update (6/2/2017): This story initially quoted Tech Report as saying the optimizations to airflow for the new fan series had occurred at the mid-RPM range. This is incorrect. Optimizing for the midpoint of the P/Q curve means optimizing flow rate (Q) vs. static pressure (P). These new fans push more air at the realistic midpoints of the curve rather than the top end points (which aren’t a realistic resistance case). ExtremeTech regrets the error. Original story below.
Noctua is one of the best cooler manufacturers on the market, with an impressive array of hardware solutions for virtually every type of case or environment. They’ve earned a reputation for standing behind their designs with full-color installation instructions, kits that include any screwdrivers or other tools necessary for installation, and upgrade kits that generally allow users with one type of CPU socket to upgrade to a newer variant at no additional cost. This last is a particular favorite feature of mine, since CPU TDPs haven’t changed much at the top end in at least a decade.
The Austrian company also has a reputation for developing excellent fans that push plentiful amounts of air without the accompanying noise, and it showed off some of its work in this department at Computex this year. Tech Report sat down with the company, which was eager to show off the results of several years of hard work on fan design. While its new fans don’t improve performance at peak airflow or pressure, the company was able to substantially improve performance at midrange RPMs.
This matters more than one might think. According to Noctua’s own tests, it was able to achieve equivalent performance as a two-fan design using just a single fan (Tech Report has shots of this test rig in action). One thing to keep in mind, however, is that the advantage of a dual fan configuration depends on how much power you’re trying to dissipate and how hot the CPU is in the first place. Look around online, even at reviews of the same cooler, and you’ll find a fair amount of variation in results between single-fan and dual-fan configurations.
Even so, these midrange results are worth paying attention to. Overclockers and enthusiasts are stereotypically thought to favor maximum cooling performance no matter what the cost, but there is a very real cost to sitting next to loud fans, day after day. Maximum cooling performance in short-term overclocking testing is all well and good, but I’ll take a fan that’s quiet in the modes where it spends 95 percent of its duty cycle over one with a few extra percent of cooling when it sounds like a jet turbine any day.
Noctua is also prepping new heatsink designs with up to seven heat pipes; Tech Report has the details on those as well. With new, high core-count devices coming from AMD and Intel in the next few months, interest in these products is certain to spike as well. 16-18 core chips are going to require formidable cooling to maintain anything like peak frequency for any length of time.
source : https://www.extremetech.com/computing/250252-noctua-unveils-new-fan-designs-improved-midrange-performance