Verax GmbH P11T Silent Heatsink Review
exposure we saw of a Verax GmbH heatsink was the P14. The slightly
smaller P11T is based on the same principles but employs a 65mm fan CAIRdB
fan. Like the larger version on the P14, this fan is virtually silent, and based
on a fairly revolutionary design that should turn the heads of even the most jaded heatsink
The fan is RPM controlled by a small thermistor
which is located in a supporting strut for the motor. Since this thermistor is
basically bathed in the cool intake air we had to make a minor adjustment before
daring to review the unit. By bending the thermistor out of its protected cavity
so that it would protrude the bottom and make direct contact with the pins
of the heatsink the fan was in a position to operate at full RPM when required.
Without this small adjustment the fan would rotate at an RPM which was not
representative of what the heatsink could really do.
The CAIRdB TAP65201237-KT fan rotates at
between 1200RPM-3700RPM over a range of 10C-46C. Even at the higher RPM's
the fan's surprising impeller design means that noise is not an issue. The
downside is that when compared to standard fans, the Verax units offer up
substantially less airflow per minute. The p11T retails for about $45USD from Veraxfans.com. That is a pretty sizeable
investment for a heatsink intended for use on PIII and Athlon processors
(1.2GHz) given the predisposition to a lower cooling capability - but
considering the absolute low-noise levels it just might be what you are looking for!
- Model Name: P11T
- Fan Specs: CAIRdB TYP65201237-KT, 1200-3700RPM, 20CFM, 12V, 0.62A.
- Fan Dim: 25x65x65mm
- Heatsink Dim: 52x62.3x65mm
- HS Material: Extruded Aluminum
- Weight: 160grams
- Mfg by: Verax GmbH
- Cost: $45USD
Sold By: www.verax.de
The Verax fan is pretty strange in its design from what
we are accustomed to and seems to vaguely resemble a jet engine turbine. While
it might be a bit premature to mention it now, we really think
the Verax fans would be an ideal solution to VIA Eden motherboards for a little
extra cooling without a noise penalty...
Verax Ventilatoren GmbH of Villingen-Schwenningen Germany make one the most unique zero-noise fans in the marketplace,
and accomplished this feat by tossing out convention, and starting over with a completely
new impeller design.
So quiet is the Verax CAIRdB fan that you literally have to hold
it up to your ear to hear it - there is almost no discernible noise signature. The trade off however comes
in terms of cost, and in measurably lower airflow to that of standard
hi-RPM axial fans.
The impeller design works by
accelerating the air within the fan evenly, over a substantially longer distance than with standard
axial fans. The impeller rotates counter-clockwise (backwards) - totally opposite to that of
traditional axial fans.