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Stock Fan Measurements
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Specifications: Phanteks PH-TC12DX Stock Fan
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Manufacturer
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Power Rating
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2.16 W |
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Model Number
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PH-F120HP
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Airflow Rating
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23 ~ 68.5 CFM |
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Bearing Type
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UFB (Updraft Floating Balance) |
Speed Rating
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600 ~1800 RPM ± 10% |
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Corners
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Open |
Noise Rating
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21.9 ~27.6 dB(A) |
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Frame Size
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120 x 120 x 25 mm |
Header Type
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4-pin |
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Blade Diameter
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113 mm |
Starting Voltage
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4.1 V |
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Hub Size
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41 mm |
Weight
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140 g |
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Data in green cells provided by the manufacturer
or observed; data in the blue cells were measured.
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The PH-F120HP is designed similarly to the 14 cm PH-F140 that ships with the TC14PE. The mounting holes are equipped with thin rubber washers, the struts are curved, and the blades have straight edges making them appear petal shaped. The hub is unusually large for a 12 cm model, measuring 41 mm across which is the same as the 14 cm version, creating a big dead-spot at the center.
At lower voltages the stock fan had a pleasantly smooth overall sound, similar to that of the larger PH-F140. Starting at about 7V, its acoustics got rougher, developing a low pitched hum at about 170 Hz. This persisted at higher speeds and as the turbulence increased, so did the whininess. The faster it spun, the worse it sounded.
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Stock Fan Measurements
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Voltage
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One Fan
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Two Fans
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SPL@1m
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Avg. Speed
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SPL@1m
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12V
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35~36 dBA
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1820 RPM
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40 dBA
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9V
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30 dBA
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1410 RPM
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32~33 dBA
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7V
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23 dBA
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1100 RPM
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25~26 dBA
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6V
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18 dBA
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940 RPM
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21 dBA
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5V
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14 dBA
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750 RPM
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16 dBA
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Measuring mic positioned 1m at diagonal angle from
the center of the heatsink.
Ambient noise level: 10~11 dBA.
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The measured SPL was high at full speed, 35~36 dBA@1m for just one fan. A speed
of about 1,000 RPM or lower was required to make it quiet. The noise level of
this fan was a bit higher than most running at similar speeds.
Test Results
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Test Results: Phanteks PH-TC12DX
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Fan Voltage
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One Fan
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Two Fans
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SPL@1m
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Thermal Rise
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SPL@1m
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Stock 120mm Fan
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12V
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35~36 dBA
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39°C
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38°C
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40 dBA
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9V
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30 dBA
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40°C
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38°C
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32~33 dBA
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7V
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23 dBA
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42°C
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40°C
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25~26 dBA
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6V
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18 dBA
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44°C
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41°C
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21 dBA
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5V
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14 dBA
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47°C
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44°C
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16 dBA
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Reference Nexus 120mm Fan
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12V
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17~18 dBA
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40°C
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39°C
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22 dBA
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9V
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13~14 dBA
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42°C
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40°C
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16~17 dBA
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7V
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11~12 dBA
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45°C
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43°C
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13 dBA
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Measuring mic positioned 1m at diagonal angle from
the center of the heatsink.
Ambient noise level: 10~11 dBA.
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Given its size and construction, it was no surprise that the TC12DX cooled
our test CPU with ease. However, when the fans were set to quiet levels, the
temperatures were higher than most premium heatsinks. The TC12DX performed considerably
better with out reference Nexus fan, showing 4~5°C temperature improvements
at similar noise levels.
Equipping a second fan was really only beneficial at low fan speeds. There was almost no difference at full speed using either the stock or reference fans.
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