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Case Fan

Rosewill - Hyperborea 89.5 CFM 140mm Fan

( 4.4 Average / 11 Ratings )






Part #






Air Flow

89.5 CFM

Noise Level

12.5 - 22.2 dbA


600 - 1300 RPM

Static Pressure

2.76 mm/H2O

Bearing Type

HDB (Hydro Dynamic Bearing)


Super silent 14cm fan with S-FLOW blades supplying 30% more airflow than a standard fan at the same speed. The greater performance combined with PWM automatic speed control allows the fan noise to be kept to a minimum.
Max static air pressure: 2.76 mm H2O
Voltage rating: 12V DC
Fan life expectancy: 50,000 hours

Completed Builds Using This Part

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Merchant Base Promo Shipping Tax Availability Total
Amazon $11.99 Free two-day shipping with Amazon Prime In stock $11.99
( 4 new from $11.99. Last updated 1 hour ago. )
Newegg $11.99 +FREE s/h In stock $11.99
OutletPC $18.04 $18.04+
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax) History:


markasoftware 7 points 28 months ago

Got it from a thrift shop for this price, and am very satisfied! Cool and moves a lot of air! My only issue with it is that the wire BARELY made it to the mobo. I had to reorient it several times and it still is almost stretching. Not sure whether to blame it on this, the mobo, or the case, however

snarkyCoder 31 points 26 months ago
from completed build TUF TUX

Silent! Good for situations where static pressure is needed!

600 -1300 RPM | 2.76 mm H2O | 89.55 CFM | 12.5 -22.19 dB

Works great as intake for my case, since the room for intake is very closed or has not much space. Would work great for radiators too.

xpr0metheusx 39 points 21 months ago
from completed build Come to the dark side...

I was skeptical about these fans at first because they aren't super popular but they are very nice. They push a good amount of air and are very quiet and low rpms. They are PWM too.

LibriLector 3 points 12 months ago
from completed build Budget for the Future

Working great for me. nice and quiet. blows air.

vlorg 38 points 6 months ago

Great price-performance ratio, but they produce an audible PWM ticking noise that is hard to ignore at low RPMs.

LightningManGTS 5 points 4 months ago
from completed build Guardian-GWS 2.0 (Finally Ryzen)

Quite good for the price to cfm to loudness ratio

alsimoneau 25 points 2 months ago
from completed build Sekmet

Pretty quiet yet seems to move a lot of air. Sleeved cables are nice. The rubber things to install them look a bit odd, but hey, it works.

bradbaum 17 points 1 month ago
from completed build New Ryzen 1700X Build

Nice 140's. Well-made and pretty quiet (can hardly hear them at normal speeds).

TransientSnortitude 8 points 1 month ago
from completed build Social Life Eater

Installing these was definitely not what I expected, but they work. Actually, they work really well. I rarely hear them speed up.