CoolJag Falcon 92-CU CPU Cooler Review

This 92mm, Evercool fan is rated to spin at between 1200RPM ~ 2500RPM. At these speeds it is rated between 18 and 28 decibels. While these are low numbers the fan certainly can not be considered an “Extremely Low noise” fan. After all, it is a dual ball bearing fan, and while 2B bearing fans are known for many things “Extremely Low noise” is not one of them.


What is interesting is the fact that this fan is labeled as a PWM compliant fan but it also has a built in thermistor. Having multiple silencing techniques working together may sound like a good idea on paper, and while on would think that “if one is good, two must be better!” in the real world this is rarely the case. In the real world what happens is that the motherboard senses temperatures are fluctuating and tries to compensate for it via PWM, while the thermistor also registers the changes and also tries to compensate. In the end you usually end up with a sluggish fan that cannot adjust quickly or accurately to increased thermal loads. The only exception that I could imagine where one would want this is if one is willing to sacrifice cooling efficiency for noise (e.g. “silent” PC market niche).


The combination of a “smart” fan that is also PWM compliant can be considered quirky yet not overly worrisome except for the fact that the thermistor has been improperly placed. It is not touching the heatsink and is in fact in the wake of its own fan's cool air down draft. This means it will always think that the heatsink is cooler than it is and throttle the fan speed accordingly. In testing it was found that even when the CPU was registering sustained thermal loads of 65c (with peaks above 70c) the fan was only spinning at less than 1300 rpm! I am at a loss to explain why CoolJag would design and market the Falcon 92 as “The Best Air Cooler in the Market” and then purposely hobble it with a fan that can’t reach speeds above the ultra low range. The easiest solution is to simply short out this thermistor with a bit of solder or cut it off and twist the two cables together. This of course will void your warranty and quiet honestly if you have to modify your brand new cooler to get it to work properly….maybe it is not the right cooler for your needs; or at the very least it can not be considered as the marketing hype claims an “Easy Installation…. No Hassles…” cooler.


The fan CoolJag opted for on the Falcon is an Evercool 92mm case-less fan. This fan is made from clear plastic and has green leds embedded in it to give off a green glow while spinning. In a nut shell; take a regular LED fan and remove it from its case, mount it on thin metal strip and you have a good idea what this fan looks like. Since this is a proprietary fan, replacing a dead fan or simply swapping it out for fan that can reach higher rpms will be difficult and you are in for some major modding.

Rather that rely on MTBF numbers, an easier and better way to get a “feel” for what the manufacturer thinks is the real length of time a product should last is too simply look at the length of warranty provided. The length of warranty has been calculated to be long enough so that customers feel secure in purchasing it BUT still short enough that it will be “out of warranty” when most fail. Taken for what its worth, CoolJag’s Falcon 92-CU comes with a 1 year warranty.