The Effizio fan itself is completely transparent - this means both the blades and frame are see through. As we'll see later, this will help with better amplification of the LED lighting.
When it comes to LED fans, the LED's are usually installed in one of two places; around the edge of the frame, or in the hub in the middle of the fan. The Effizio uses a hub mounted LED design, which makes for a cleaner looking frame. Four blued LED's are used in the Effizio, which can be seen in the picture below.
The Effizio fan is based off a fluid dynamic bearing design - this is a design we've seen in many silent fans in the past. Fluid dynamic bearings have a much longer life than a traditional ball bearing or sleeve bearing would have and also offer much quieter operation. SilenX doesn't provide a MTBF rating on the Effizio itself, but most fluid dynamic bearings have a minimum MTBF rating of around 80,000-100,000 hours of operation.
The numbers on the box of the Effizio look promising - it's supposed to move around 74 CFM of air while producing a noise level of only 15dBA. In comparison, if you were to stand in your house in the middle of the day, you'd be hearing around 14dBA of white noise and background noise - i.e., so little noise that you likely wouldn't even distinguish it as being noise. Breathing is said to be around 10dBA. This is accomplished at a rotational speed of about 1400 +/-15% RPM. The reason this looks so promising is that one of my all time favourite silent fans, the Nexus 120mm fan, moves half as much air at a noise rating of 18dBA and it's barely louder than a human whisper.
I decided to ask SilenX for some clarification on how they get their 15dBA rating - below is their explanation of the testing procedure used:
"We've been using a geometric mean of the values recorded from 1 meter along each of the X, Y and Z axes to do our figures on the fans. The problem with assigning a simple dBA value on a fan is that many factors can affect it. Within the same batch of fans, noise can differ by several dBA and either normalize or diverge over time."
The Effizio offers both molex and 3-pin power connections without the need for an adapter cable. SilenX has put both ends on the cable coming from the fan.