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TEST RESULTS
First the EN8600GT Silent was tested with the stock cooler. It's a simple heatsink
comprised of a copper base connected to a single heatpipe, and thick aluminum
fins.
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The Asus EN8600GT Silent with stock heatsink.
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The underside, cleaned up.
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Asus EN8600GT with Stock Heatsink
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State
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System Fan Speed
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System Noise
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GPU Temp.
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CPU Temp.
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System Power
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Idle
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7V
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19 dBA
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55°C
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22°C
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94W
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CPUBurn
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56°C
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39°C
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163W
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CPUBurn + ATI Tool
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98°C
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42°C
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185W
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9V
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21 dBA
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93°C
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37°C
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184W
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12V
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23 dBA
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86°C
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183W
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With the system fan at 7V, the GPU temperature with the stock heatsink was a sizzling 98°C, which
also seemed to affect the CPU temperature. Turning up the system fan speed resulted
in significant improvements.
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The S2 installed in our test platform.
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Asus EN8600GT with AC Accelero S2 (Passive)
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State
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System Fan Speed
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System Noise
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GPU Temp.
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CPU Temp.
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Idle
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7V
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19 dBA
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44°C
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22°C
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CPUBurn
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45°C
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39°C
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CPUBurn + ATI Tool
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63°C
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40°C
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9V
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21 dBA
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60°C
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37°C
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12V
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23 dBA
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57°C
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35°C
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The Accelero S2, with 30°C to 35°C improvements across the board, makes
the stock heatsink look foolish. The results were also better than the EN8600GT
OC Gear card which we tested on our old test platform. That card used
a Zalman-type cooling solution, with which we recorded a load temperature of
70°C @ 22 dBA. Even after accounting for the temperature difference between
our old test platform and our new one (about 5°C), the S2 is still slightly
better. Any time a passive heatsink can match or beat the performance of an
active cooler, it's a great achievment.
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