Two Big Top-downers: Big Typhoon VX & Xigmatek HDT-D1264

Cooling
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Xigmatek HDT-D1264

The stock fan's model number is the same as the one on the HDT-S1283. It was a touch different, but the fan speed and noise level are more or less the same.


Xigmatek stock fan.


HDT-D1264 Stock Fan Measurements
Fan Voltage
Fan Speed
Noise Level
12V
1370 RPM
27 dBA @1m
11V
1250 RPM
24 dBA @1m
10V
980 RPM
20 dBA @1m
9V
550 RPM
~19 dBA @1m

HDT-D1264 w/ stock fan
Fan Voltage
Noise @1m
Temp
°C Rise
°C/W
12V
27 dBA
44°C
24
0.31
11V
24 dBA
44°C
24
0.31
10V
20 dBA
46°C
26
0.33
9V
~19 dBA
49°C
29
0.38
HDT-D1264 w/ reference fan
12V
22 dBA
40°C
20
0.26
9V
~19 dBA
42°C
22
0.28
7V
<19 dBA
44°C
24
0.31
5V
<19 dBA
51°C
31
0.40
Load Temp: CPUBurn for ~10 mins.
°C Rise: Temperature rise above ambient (20°C) at load.
°C/W: based on the amount of heat dissipated by the CPU (measured 78W); lower is better.

Fan @ 12V: There was mostly turbulent noise combined with some buzzing. The overall sound level was a bit distracting. Cooling performance was good, not great. A far cry from the best tower heatsinks.

Fan @ 11V: The type of noise was similar, only less so. The buzzing became more faint, but was still evident close-up. The overall sound would fall away into the background if one was sufficiently distracted or concentrating on another matter. Surprisingly, the temperature did not change from 12V. 24°C above ambient appeared to be the limit of the heatsink's performance with the stock fan and no additional airflow would help it further.

Fan @ 10V: At this level, the noise it produced was fairly benign, almost pleasant. At close range there was some low-pitched buzzing. The CPU temperature only increased by 2°C.

Fan @ 9V: The frequency of the buzzing slowed to the point where it was just slightly ticking, but it was only audible from inches away. At one meter, it blended away into the background. Thermal performance dropped by an additional 3°C.

Results with the stock fan were decent, though far from stellar. What's most amazing is the spread of temperature readings: Only 5°C separated 1370 RPM from 550 RPM. Varying the airflow changed the CPU temperature very little — that's a testament to the efficiency of the heatsink.

The reference fan improved the HDT-D1264's performance further, just as it did with the VX. The Nexus 120mm delivered moderately better temperatures with lower noise levels across the board.



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