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Acoustics
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System Noise @ 0.6m
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Activity
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GMA 4500MHD
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GeForce G210M
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Idle
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20~21 dBA
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Xvid Playback
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20~21 dBA
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x264 Playback
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21 dBA
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23 dBA
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CPU Load
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29 dBA
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CPU + GPU Load
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29 dBA
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35 dBA
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Ambient noise level: 11 dBA.
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When idle and during Xvid playback, the UL80Vt remained very quiet by laptop
standards, between 20 and 21 dBA@0.6m, with the fan either off or spinning at
a low level — hard to tell which. The acoustic profile was very smooth
with just a soft hiss emanating from the exhaust port. x264 playback caused
the fan to spin up slightly resulting in a negligible noise increase on integrated
graphics and about 2~3 dBA extra on discrete graphics. When the G210M uses CUDA
to decode x264 playback it used much more energy than GMA 4500MHD utilizing
DXVA, and this in turn also results in more noise. Still, the acoustic character
at this level is fairly pleasant and if you're watching a movie, no doubt the
speakers will be on high volume or you'll have headphones on. Either way, it's
hard to notice during actual use.
The machine only became loud when we pushed the CPU with Prime95, and it became
particularly jarring combined with FurMark when running on discrete graphics.
At 29 dBA and above, the noise level is of course, fairly high, but the pitch
of the fan is tolerable, though slightly on the whiny side.
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UL80Vt idling at 0.6m.
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One strange thing we noticed was a ultrasonic peak at well beyond the 10KHz
level, at a low enough level that no one is likely to be able to hear.
Thermals
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System Temperatures
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Activity
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GMA 4500MHD
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GeForce G210M
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CPU Temp
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HDD Temp
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CPU Temp
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HDD Temp
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GPU Temp
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Idle
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28°C
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33°C
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40°C
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35°C
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48°C
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Xvid Playback
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40°C
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34°C
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40°C
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35°C
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48°C
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x264 Playback
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40°C
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35°C
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46°C
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35°C
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59°C
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CPU Load
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55°C
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35°C
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58°C
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35°C
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60°C
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CPU + GPU Load
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55°C
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35°C
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67°C
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35°C
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87°C
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Ambient temperature: 19°C.
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Throughout testing the underside of the laptop never got hot. The warmest sport
was the rear left corner and using a spot thermometer we found that it never
measured higher than 35°C. Simply put, you can leave it on your thighs all
day long without any discomfort — at least not from heat. Internally, the
CPU and hard drive remained fairly cool until discrete graphics were turned
on and the system was put on load.
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