Arctic Cooling Accelero S1 VGA Cooler

Cooling
Viewing page 4 of 6 pages. Previous 1 2 3 4 5 6 Next

PASSIVE COOLING TEST RESULTS

First the S1 was tested passively as it was meant to be, with only a single system fan running. Ambient conditions during testing were 22°C and 20 dBA. It was slightly louder than normal in our lab that day, mainly because of the rainy weather.

Results: Accelero S1, Passive
State
System Fan Speed
SPL@1m
GPU Temp.
VGA Amb.
CPU Temp.
System Power
Idle
7V

<20 dBA

44°C
38°C
22°C
104W
CPUBurn
53°C
45°C
43°C
189W
CPUBurn + ATI Tool
95°C*
68°C
270W
9V
21 dBA
271W
12V
23 dBA

82°C

60°C
38°C
267W
* ATI Tool detected delta artifacts, heatsink failure

With the system fan at 7V and 9V, the ATI X1950XTX GPU temperature leveled off at 95°C. In addition, artifacting was detected in ATI Tool meaning the S1 wasn't able to cool the video card properly in the test platform. A few degrees lower and it would have made it, but it wasn't quite up to snuff. When the system fan speed was increased to 12V however, the temperature dropped dramatically and stability was achieved. A sound pressure level of 23 dBA@1m is pretty quiet but not silent, however. Another Nexus 120mm fan was then installed as a front intake, attached to the same fan controller to see what difference it would make.

Comparison: Accelero S1 (Passive), One vs. Two System Fans
System Fan Speed(s)
SPL@1m
GPU Temp.
VGA Amb.
CPU Temp.
System Power
7V
<20 dBA
95°C*
68°C
43°C
270W
9V
21 dBA
271W
7V/7V
22 dBA
90°C*
69°C
275W
12V
23 dBA

82°C

60°C
38°C
267W
9V/9V
25 dBA
89°C
68°C
42°C
276W
* ATI Tool detected delta artifacts, heatsink failure

With both fans at 7V, the SPL was 22 dBA@1m and the temperature decreased to 90°C — but still not enough for ATI Tool to stay artifact-free. 9V did do the trick, with a miniscule one degree improvement, but at 25 dBA, it was louder than the single system fan at 12V. In our test platform it appears that exhaust airflow is the main factor in passive VGA heatsink performance.

Comparison: Zalman VF900-CU vs. Arctic Cooling Accelero S1 (Passive)
Zalman VF900-CU
Arctic Cooling Accelero S1
Fan Speed
System Noise
GPU Temp.
VGA Amb.
System Fan Speed(s)
System Noise
GPU Temp.
VGA Amb.
5V
20 dBA
94°C*
61°C
7V
<20 dBA
95°C*
68°C
7V
22 dBA
93°C
60°C
7V/7V
22 dBA
90°C*
69°C
9V
24 dBA
92°C
58°C
12V
23 dBA

82°C

60°C
12V
28 dBA
89°C
56°C
* ATI Tool detected delta artifacts, heatsink failure
Note: Ambient temperature during VF900 testing was 1°C lower.

Compared to the Zalman VF900-CU, the Accelero S1 in passive mode is very impressive. With just the system fan @ 7V, it matches the cooling performance of the VF900 @ 5V. With the system fan @ 12V, the noise level was equivalent to the VF900 @ approximately 8V, but the S1 outperformed it easily despite not having any direct airflow pushing through its fins. The quality of noise from the system fan, however, was much smoother and more benign than that of the VF900. Neither heatsink was ideal for the X1950XTX, however. The S1 needs a fan to handle the heat of the X1950XTX.



Previous 1 2 3 4 5 6 Next

Cooling - Article Index
Help support this site, buy from one of our affiliate retailers!
Search: