NZXT Kraken X61 CPU Cooler: Fan Noise Measurements
As per request from many members of the enthusiast community, Benchmark Reviews has added noise measurements to our CPU cooler testing methodology. Each test is conducted in a noise isolated room, during the night time to avoid any minor disturbances caused by normal daytime activities near our location. Our base ambient temperature was measured at 15 dB for each of our tests. Noise was measured using a Brüel & Kjær type 2225 sound level meter located at 1 meter from the fan/fans. Fans were placed so that the axis of rotation of the fan is perpendicular to our line of measurement. For our dual fan noise measurements, fans were placed in series (facing each other) with a 10 cm gap between them. All fans were tested at 12 Volts.
The included NZXT FX V2 140 mm is loud, even louder than the Silverstone APA1225M12 fans included with both the TD03-E and TD02-E. Yet one NZXT FX V2 does a better job than two of our Yate Loon D14SM-12 140 mm quiet fans at keeping our I5 4670k cool. The only fan louder than the NZXT FX V2 140 mm fans is the old CM fan included with our CM Hyper 212 evo.
Adding a second fan into the equation, the NZXT variants are still louder than almost every other 140 mm fan in our tests. NZXT should consider investing into quieter fans, as this can greatly impact the buying decision of many users. However, at the price point the Kraken line is targeting, buying a couple of Yate Loon D14SM-12 140 mm fans shouldn’t be any trouble as they retail for only $3.00.