It seams that we are overwhelmed with fans (no pun intended) to review this period. So, more cooling products from Noiseblocker, their “BlackSilentPro” range.




(((Noiseblocker))) is a trademark of the Blacknoise group.
Blacknoise Deutschland GmbH is focused on the development and production of high-quality product solutions in computer Hardware, multimedia accessories and they also produce industrial grade fans.

Founded in 1998, they are the European leader in the low-noise PC arena – particularly through their Noiseblocker brand – and have become a mature, economically stable company.
Thus, they have branches worldwide in over 33 countries.

Their success is based on innovative product development, quality assurance and not only their global reach, but their ability to think flexibly and are very proud of their products, patented technologies and testing methodology like low-noise development, Low-dB-measuring chamber, fast prototyping, CAD construction, fan-characteristic curve-testing bench-measurement and acoustic-camera-visualization engineered at the limits of audibility.


Prices when reviewed:

140 mm:

PK-1: £ 11.99

PK-2: £ 11.99

PK-3: £ 14.99

PK-PS: € 19.99

120 mm:

PL-1: £ 9.98

PL-2: £ 9.98

PL-PS: £ 12.95

92 mm:

PE-1: £ 9.98

PE-P: € 11.99


Complete Specifications:



All the technologies and patents.


– Developed in Germany
– Position-invariant magnetic bearing NB-NanoSLI® 2NEW!
– Silent NB-EKA P2 Drive NEW!
– Bayer® Makrolon® rotor with anti-dust technology
– Weighted reinforced fibreglass PBT frame
– NB cable management
– Pluggable 20 + 50 cm connecting cables with high-quality textile sheath
– Screw set for vibration-free assembly and silicone sealing frame


Visual Inspection


As previously stated, the fans from Noiseblocker regardless of their price range and purpose, they all have excellent specification and one of the most complete specs sheet we’ve seen.

Regarding the box design, it’s professional and reserved.

Let’s begin.
First the 140 mm ones – the PK range.





Inside, we have the following:

– 4x fine thread screws
– 4x knurled nuts
– 4x silicon inner grommets
– 1x silicone frames
– 1x 20 cm connection cable with textile sheath/sleeving
– 1x 50 cm connection cable with textile sheath/sleeving
– 1x Noiseblocker hard sticker logo


We see a standard frame design and a propeller with 7 semi-transparent with average angle which are supposed to deliver constant airflow at very low noise level.
Identical with the rest regardless of size.


The 120 mm ones – the PL range.




Identical setup as before.


And finally the 92 mm ones.




And all together.


Solid frame, good quality fell from the used materials, no blade play and clean look.


How we tested


– Sound meter – Pyle PSPL01 – positioned 1 meter from the case, (we will include +/- 2-3 % margin for error) with ambient noise level of 25-30 dB/A.
– RPM control and monitoring via MSI Control center, tested at 4 different stages 20, 50, 80 and 100 % RPM load (only for the PWM ones)

– We removed the video card plus our PSU has semifanless action so that we removed virtually any other sources of sound, to leave only the Noiseblocker fans running for optimal testing.

– Regarding airflow we used an anemometer – Mastech MS6252A (we will include +/- 6-11 % margin for error) – positioned 15 cm away from the fan and in between we use an improved cardboard tubing also in diameter of 140 mm to channel all the airflow as straight as possible (used also for the small fans). The results were recorded in CFM.

– And the ones that could be mounted on the CPU heat sink to test their cooling and static pressure efficiency. CPU at stock speed and OC to 4.5 GHZ via Witcher 3 in a 20 minute gameplay session.

– The rest of the hardware:
Processor: Intel i7 2700k
CPU heatsink: Thermalright AXP-100R
Case: NCase M1
Storage: Samsung 840 Pro 128 GB (no HDDs, again to remove extra all noise)
Motherboard: MSI B75IA-E33 mITX
PSU: Silverstone SX-600G SFX w/ semifanless function

– Other fans for the CPU test:

Reveen Goldwing 140 mm – 300 – 1700 RPM – < 92 CFM – < 36 dB/A – < 2.200 mmH2O
DeepCool GF-120 – 500 – 1800 RPM – < 80 CFM – < 33 dB/A
Venturi HF-140 mm PWM – 400 -1500 RPM – < 78 CFM – < 30 dB/A – < 1.940 mmH2O
Noisblocker eLOOP B12-P – 800 – 2000 RPM – < 78 CFM – < 28 dB/A – < 2.204 mmH2O


The results.


First the CFM and noise outputs.
All within published specs, accounting the mentioned recording %.
So all is good so far, all of them are dead silent besides the PK-3 at full chat.



Now moving to the CPU temperature and static pressure test:


* 0 degrees means that a product has failed to keep the temperatures safe and the CPU went into thermal throttling.



The good:

+ All performed very well regarding noise output
+ Good mix of quality and performance
+ The antivibration systems work extremely well
+ Their presentation is very professional and rich with technical details
+ Sleeved and long cables

The bad:

– Not much to say beside the price and that the high rpm model the PK-3 can be heard

Let’s move to our scores and awards:

Globetrotters “Good value for money” Award – 4 out of 5 for the 3 pin ones


Globetrotters “Good Performance & Silent” Award – 4.5 out of 5 – for the PWM ones


Many thanks to Noiseblocker for the supplied products !


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