LEPA Chopper 120mm review

Before I start with the review I want to share some details about LEPA Chopper 120mm. This model is offered with two types of back light which are blue and red made to provide very nice and interesting visual effect.

For this review I got LEPA Chopper 120mm with red backlight. The part number of the fan is LPCP12N-R and the official technical details are here: LEPA Chopper.

So let’s check the fan itself:

The fan was provided to me inside a very standard for the company black carton box with a see through plastic cut through which you can see the fan structure. On first sight you can see the interesting feature that this fan offers – the back light, but I will talk about it a bit later. On the front panel of the box there are some details for the product  like the model name, dimensions and type of the backlight while the full technical details are on the back of the box.

After I took out the fan out of the package the first thing to notice was that it offers a pretty standard structure with one exception. LEPA Chopper 120mm is made of a semi transparent plastic frame in black and a complete transparent propeller with seven blades with very smooth angle. And here comes the interesting part:

There is one more part attached to the propeller over the blades on which is installed the LED element. As you can see on the picture above there is one tube looking part which is actually the LED that I can call “frontlight” 🙂 So this tube looking LED is made to provide the pulsating light which creates a really nice visual effect when the fan is working:

And how it looks like when it is rotating:

Yes, of course it is a full circle 🙂

According to the technical details this model is supposed to provide maximum 900±10% revolutions per minute, airflow level of 68.31 cubic metres per hour at only 16dBA. If this is true, then I can say right now it’s a model made to work as a case fan only. But of course I will check that a bit later.

The powering and regulation of the fan is done by quite a long not sleeved cable with 3 pin power connector.

The standard package includes:

  1. Four rubber dumpers for reducing the noise if there are vibrations
  2. 4-to-3 Pin power adaptor
Not much but still enough so this fan can be used normally.
The tests will be conducted in my standard way. I will mount the sample and test it at 5V/7V/9V/12V and my goal will be to check the authenticity of the technical characteristics given by the manufacturer. The product will be tested under close-to-perfect conditions, not taking into account any external factors. The results achieved during the test can in no way be the same if the fan is mounted on a cooler or on the case fan hole of any modern computer case. I will measure the amount of air going through the fan for one hour and its speed. For this I use a fan controller, a voltage meter, an anemometer and a stand made specifically for this purpose.

The test results are shown in the following charts:

Airflow through the fan at 5V, 7V, 9V, 12V

Propeller rpm during the tests at 5V, 7V, 9V, 12V.

The anemometer showed the following air speed:

After mounting the fan onto the stand and leaving it to run for about 30 minutes at maximum speed, it was time for the tests to begin.

As with my other tests, again I started with a gradual increase of the voltage through the Lamptron FCT starting at 0V and the LEPA Chopper 120mm made one full revolution at exactly 12V, while the LED tube powered at 5.5V and to conduct the first test I had to decrease the voltage to 5V.

Test at 5V:

At 5V the fan was rotating at only 330 revolutions and the airflow level of only 8.64 cubic metres per hour. The model was absolutely silent.

Test at 7V:

The second test at 7V the fan reached 525 revolutions per minute and airflow level of 23.04 cubic metres per hour. The fan was still silent.

Test at 9V:

The third test was conducted at 9V and at this voltage there was again no noise from the fan while rotating at 720 revolutions per minute with airflow level of 36 cubic metres per hour.

Test at 12V:

Last test was conducted at 12V which is the actual starting voltage for this model. At 12V the fan provided maximum airflow level of 53.28 cubic metres per hour at 1000 revolutions per minute. There was no noise at all coming out of the fan.


  1. Performance: After I am done testing all I can say is this fan is totally made for mounting on case fan slot because of the starting voltage on 12V and the low noise level to support the airflow inside the case. It is not good for installing on CPU cooler because of the low airflow and static pressure.  I should say that when the fan was decreased to 5V it was barely working.
  2. Noise level: I won’t comment the noise since every 120mm fan working at 1000 rpm tops is absolutely silent.
  3. Apperance:  Well the performance was low and I can’t deny it but the appearance is outstanding. The fan offers a pulsing back/front light in red which provides a great visual effect that can make every case a real masterpiece.
I think LEPA Chopper 120mm deserves the following reward:


LEPA Chopper 120mm has been added to the 120mm fans catalogue.

Official price (MSRP):

LEPA Chopper 120mm – 9.99 euro

Warranty – uknown

I thank LEPA for the test samples.

Dobrin Krastev is the owner, reviewer and newsman of www.DVTests.com with more than 15 years' experience in personal computers, server and storage systems, UPS, peripheral devices and software. Passionate about testing and reviewing, AMD overclocking using AM3 990FXA and AMD FM2 A85X test systems and building modding projects.
  1. Reply USB Windows 7 16.11.2012 at 15:08

    it is awesome led effect, but as you said, its not performance oriented

  2. Reply Boskorp 12.11.2012 at 16:20

    Looks very cool, can you confirm it is using some kind of conductive brushes to transfer current from base to the propeller (U may have to disassemble)? Or it is using some other system, it is interesting to investigate as we know brushes go bad in time and cause other problems if the fan accumulates a dusty veil. There seems a huge difference between given performance and achived during the test 900±10% >> 1000 rpm@12V, 68.31 >> 53.28 m3/h
    If red is looking so cool, blue should be rocking 🙂

  3. Reply PepiX 12.11.2012 at 13:27

    Nice looking.. but then.. as you show in our review limited only to those needing an appearance fan.. still nice addition for the modder..

Leave a reply