Prolimatech Ultra Sleek Vortex 14 Test and Review

The two fans were provided to me in very simple, stylish and thick white carton boxes with a small cut through which you can see the propeller structure. As you can see on the picture above, there is a 1:1 picture of the fan on the front side with some minor technical details, while the full technical information and some detailed explanations regarding the product are, as usually, on the back side of the box.

Since I received two absolutely the same fans I decided to describe only one of them and later test them both and do an average result from their performance.

Now let’s check the fans themselves…

After I took one of the test samples out of its box I got this view, which kinda made me smile, but not a regular smile. More like one of those evil genius smiles …


First thing I noticed when Prolimatech Ultra Sleek Vortex 14 was in my hands was the frame.


The model is made of very thick and very hard to bend plastic, entirely painted in black matte, circle type frame with dimensions according to the official technical details of 140mm x 15mm with 120mm mounting holes and overall weight only 91 grams.


Apart from that, Prolimatech Ultra Sleek Vortex 14 is supplied with something very interesting and that is the propeller. The fan offers a painted in black matte propeller with 17 not very wide blades but with very sharp angle and according to my experience I expect to see very high performance at all tests. Actually, fans with such a propeller design is made to provide huge airflow with average to high static pressure level but at high speed get a bit noisy. If this is so, we will find out a bit later.


The connection between the propeller and the frame is done with a dual ball-bearing for better performance and longer life span while reducing the noise level.

The model is powered and regulated by a not very long 4-pin PWM sleeved in black cable and connector with maximum input power of 2.04W.


The standard package content for this product is made of:

  1. 4 metal screws
  2.  a 4-pin molex connector to 4-pin PWM power connector on which only 2 pins are connected. The other 2 pins which are the Tachometer and the PWM control are on a separate cable meant to be connected to the motherboard so the system can control the fan

Now let’s do some testing:

Actually, I will test both test samples and according to their results I will make a final average of the results which will be presented on the graphics below.

The tests will be conducted in my standard way. I will mount the fans and test them at 5V/7V/9V/12V and my goal will be to check the performance of the fans in real conditions. The products 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 fans for one hour and their speed. For this I use a fan controller, a voltage meter, an anemometer and a stand made specifically for this purpose.


And this is what the fans look like installed on my test stand:


The test results are shown in the following charts:

Prolimatech Ultra Sleek Vortex 14 Airflow

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

Prolimatech Ultra Sleek Vortex 14 RPM

The anemometer showed the following air speed:

Prolimatech Ultra Sleek Vortex 14 Speed

After the fans were installed onto the stand and left 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 both of the Prolimatech Ultra Sleek Vortex 14 made at least one full revolution at about 6V and to do the first test I had to decrease the voltage to 5V.

Test at 5V:

At the first test conducted at 5V the fans provided average airflow level of 64.8 cubic metres per hour at average 660 revolutions per minute. At these revolutions per minute the fans were absolutely silent.

Test at 7V:

After I increased to 7V the fans reached maximum 855 revolutions per minute and remained silent while providing average 85.92 cubic metres per hour. Really impressive to be honest.

Test at 9V:

The third test conducted at 9V and the fans were rotating with maximum 990 revolutions per minute with airflow level of 100.32 cubic metres per hour. At this test there was a tiny noise from the air passing through the propellers. There was no noise coming out from the motors.

Test at 12V:

The last test done at 12V and revealed the full capabilities of the products with average airflow level of 120.48 cubic metres per hour working at only 1140 revolutions per minute. The noise from the air passing through the propellers increased just a little bit.


After I was done testing the fans on a stand and summing their results up into one, I decided to do a little bit more testing by installing one of them on a CPU cooler – Prolimatech Megahalems and check out how it performs. Of course, I’ve decided to compare it with another model with dimensions of 140 x 25mm – LEPA LPVX14P4.

For this test I used my standard hardware:

CPU: AMD Athlon X4 620 at standard frequency of 2612 MHz and overclocked at 3640 MHz (at 1.5V) per core for the tests.

Motherboard: GigaByte 790X-UD3P

Video card: Sapphire 5830 Extreme 1GB DDR5 256bit at standard frequency of 800/1000 MHz.

Memory: 2 x 2GB Apacer 800 MHz

Hard drive: Kingston SSD SV100S264G

Case: SilverStone Raven RV03

Power supply: Antec HCP-750W

Cooler: Prolimatech Megahalems

Thermal paste: Gelid GC-Supreme

Fan mounted: All of the fans inside the case were disconnected.

Since Prolimatech Megahalems is designed to be used with 120mm fans I had to improvise and use zip-ties to attach both of the fans to the cooler. For this test I decided to test only at overclocked frequency of 3640 MHz (at 1.5V) per core with full load on the processor.


After I was done testing, here are the results I measured.

Prolimatech Ultra Sleek Vortex 14 installed on Prolimatech Megahalems with full load of the CPU at 3640MHz:


Prolimatech Megahalems 1 Sleek Vortex @ 3640 stress

LEPA LPVX14P4 installed on Prolimatech Megahalems with full load of the CPU at 3640MHz:


Prolimatech Megahalems LEPA LPVX14P @ 3640 stress


All tests are done and I think it is time to share my thoughts:

  1. Performance: Well, what can I say… Even though the fans are 10mm thinner than the regular models they performed really, really well offering very nice and stable airflow and a decent static pressure level. The thing that surprised me is that both of the fans started rotating at exactly the same voltage and were performing in almost the same way with some very minor differences at all tests, which is a great feature guaranteeing their quality. According to Prolimatech, these fans are made to be used in smaller or HTPC system and still I can recommend them to be used as case fans boosting the airflow inside a regular ATX cases and as fans to cool CPU or VGA coolers.
  2. Noise level: Prolimatech Ultra Sleek Vortex 14 is a model with very aggressive design and propeller structure which made me think that this model will be a bit noisy, yes with good performance, but still noisy. After I am done with testing both samples I should admit I was  wrong. Both of the fans remained very quiet at tests conducted at 5 and 7V and started to generate a tiny noise from the air passing through the propeller. Of course, if they were working at higher revolutions per minute they would get noisier.
  3. Appearance: I have nothing to say except – good job, Prolimatech! The models look very nice offering aggressive look in completely black colour scheme, which will stay neutral when installed inside a case or mounted on a CPU cooler.

I think Prolimatech Ultra Sleek Vortex 14 deserves the following reward:


Prolimatech Ultra Sleek Vortex 14 has been added to the 140mm catalogue.

Official price (MSRP)unknown

Warranty: 12 months

I thank Prolimatech for the test sample.




Dobrin Krastev is the owner, reviewer and newsman of 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 Boskorp 11.04.2013 at 11:54

    Yep, thats cool design and good noise level. A good proof thin are not weak. I wonder would it fit to a 120mm fan designed cooler and will there be a disadvantage of doing that? Definitely will be good on RAM modules with high heatsinks leaving enough space for them.

  2. Reply Stuen4y 09.04.2013 at 8:57

    Aren’t the fans 10mm slimmer than the regular models with 15mm width compared to the regular 25mm. You have written down thicker. 🙂 I like thin fans for push-pull mounts on cpu coolers if you have problems with ram height. Overall good product.

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