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TEST RESULTS
Cooling Results
| Scythe Ninja 2
w/ reference Nexus 120mm fan |
|
Fan Voltage
|
SPL @1m
|
Temp
|
°C Rise
|
°C/W
|
|
12V
|
16 dBA
|
38°C
|
17
|
0.22
|
|
9V
|
13 dBA
|
39°C
|
18
|
0.23
|
|
7V
|
12 dBA
|
41°C
|
20
|
0.26
|
|
5V
|
11 dBA
|
44°C
|
23
|
0.29
|
Load Temp: CPUBurn for ~10 mins.
°C Rise: Temperature rise above ambient (21°C) at load.
°C/W: based on the amount of heat dissipated by the CPU (measured
78W); lower is better. |
The Ninja 2 performed very well during testing. Thermal rise was only 17°C
above ambient at 12V and 23°C at 5V, which is not a lot of difference considering
at 5V, the Nexus fan spins at just above 500 RPM. Despite the decrease in fin
spacing, the Ninja 2 is excellent when airflow is limited and makes a good choice
as a passive CPU cooler. The Nexus fan is usually inaudible at 9V or less unless
the ambient noise level is very low as it is in our anechoic chamber.
|
Comparison: Ninja 2 vs. Previous Ninjas
|
|
Fan Voltage
|
SPL @1m
|
°C Rise Above Ambient Temperature
|
|
Original
|
Ninja 2
|
Copper
|
Rev.B (bolt-thru)
|
Rev. B
|
|
12V
|
16 dBA
|
15
|
17
|
17
|
21
|
25
|
|
9V
|
13 dBA
|
16
|
18
|
18
|
22
|
27
|
|
7V
|
12 dBA
|
19
|
20
|
20
|
24
|
30
|
|
5V
|
11 dBA
|
21
|
23
|
23
|
26
|
32
|
|
All results generated with our reference Nexus 120mm
fan.
|
While the Ninja 2 did not improve on our original, enigmatic Ninja sample,
it did match the Copper's performance despite its mostly aluminum composition.
It is much superior to the Ninja Rev. B, even when a bolt-thru kit is used with the latter.
|
Comparables
|
|
Fan Voltage
|
SPL @1m
|
°C Rise Above Ambient Temperature
|
|
HDT-S1283
|
Zen FZ120
|
Ninja 2
|
Ninja Copper
|
Hyper Z600
|
|
12V
|
16 dBA
|
13
|
15
|
17
|
17
|
17
|
|
9V
|
13 dBA
|
15
|
16
|
18
|
18
|
19
|
|
7V
|
12 dBA
|
18
|
19
|
20
|
20
|
21
|
|
5V
|
11 dBA
|
24
|
24
|
23
|
23
|
25
|
|
All results generated with our reference Nexus 120mm
fan.
|
The Ninja 2 posted test results identical to the Ninja
Copper. While it does not perform better overall than
some of the newer, smaller heatsinks like the Xigmatek
HDT-S1283 and Zerotherm
Zen, it holds an impressive advantage when very low airflow is applied.
For example, the HDT-S1283 is 6°C worse at 5V compared to 7V, while Ninja
2 is only 3°C worse. We postulate that if airflow is decreased
further, the Ninja 2's performance advantage would increase.
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