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TEST RESULTS
AC Power Draw
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Test Results: System Power
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Test State
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Gateway EC1803h
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Asus 1005HA
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Standby/Sleep
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1W
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1W
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Idle
(screen off)
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9W
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9W
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Idle
(screen on)
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11W
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9W
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CPU Load
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21W
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13W
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CPU + GPU
Load
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23W
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16W
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Compared to the Atom powered 1005HA, the EC1803h uses about 2W more when idle.
Much of the extra energy is used to drive the screen though — the idle
power draw was within one watt of each other when the screen was disabled. On
heavy load, the Core 2 Solo eats up a lot more power, but the Gateway's GMA
4500MHD graphics is more efficient than the ancient GMA 950, using only 2W when
stressed compared to 3W.
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CPU-Z screenshot taken when idling in Balanced mode.
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Strangely when the system was idling using the Balanced and Power Savings power
schemes, the CPU ran at 1.6GHz with a core voltage of 0.875V according to CPU-Z.
In High Performance mode it idled at 1.2GHz but with a higher voltage (0.925V).
The two states measured about the same according to our power meter, so we left
it at the default setting (Balanced).
Video Playback
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Test Results: Video Playback
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Test State
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Gateway EC1803h
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Asus 1005HA
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Avg.
CPU
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System Power
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Avg.
CPU
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System Power
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Rush Hour
(1080p H.264)
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38%
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18W
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91%
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15W
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Coral Reef
(WMV-HD)
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71%
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20W
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56%
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14W
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Undead Battle
(720p x264)
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52%
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19W
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84%
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15W
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Spaceship
(1080p x264)
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52%
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19W
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100%
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16W
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Iron Man
(Flash HD)
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91%
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19W
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88%
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15W
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Grey boxes: watchable
Red boxes: unwatchable, failure
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With a GPU supporting hardware acceleration, the EC1803h is much more capable
at playing HD video than the usual Atom/GMA950 based solutions. Our 1080p H.264
clip was easily rendered and with DXVA support, we were able to play both 720p
and 1080p x264-encoded files with only 52% CPU usage. The 1005HA was only able
to play our x264 720p clip with a software decoder (CoreAVC), and only when
using AC power (it underclocks when unplugged from the wall). The EC1803h played
the Iron Man HD trailer on Youtube fairly smoothly, but there were a few brief
moments of choppiness. The SU3500 processor isn't quite enough for HD Flash
content, but it's far from unwatchable.
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