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Benchmark Results: Power Consumption

Quick Look At Asus' CULV Notebooks: The "Premium Netbooks"
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Unlike our earlier netbook roundup, we don't see any of these notebooks drain straight down to 0%. The built-in alarms within the BIOS and Windows 7 force a hibernation or shut down when you hit roughly 5% of battery capacity.

This is the percent drop in battery life you should see in Windows 7 if you put the system into Suspend mode. Remember that Microsoft rounds off. For example, depending on where you are on the capacity scale, you may see 4% or 5% drop over six hours for the 1215N.

This benchmark was a bit of a surprise. For whatever reason, our power consumption numbers indicate that the idle power of the ACPI S3 power state (suspend) on the Nile platform is significantly higher than that of the Ion 2. The 1215N seems to really benefit from some of Intel's power optimizations by employing Optimus rather than using a straight-up Ion 2 config. What is the exact difference?


1215N
1215T
UL20A
Suspend Power Consumption (Watts)
0.41
0.54
0.21


On a nearly-identical system configuration, the Nile platform consumes about 30% more power than an Ion 2-based notebook with Optimus. When you talk about high mobility, this can add up to serious time differences in how long you stay away from a wall socket.

Remember that IE8 is threaded. This benchmark includes navigation of Web sites, including scrolling calculated to a reading speed of ~200 WPM. On Amazon, we shopped for GPS units and common Biology textbooks.

This session consists of the following:

  • 25 minutes of Flash 10.1 (YouTube 360p)--one tab
  • 24 minutes of Wikipedia reading (four Entries)--one tab per entry
  • 4 minutes of Amazon.com--two tabs
  • 3 minutes of CNN.com--two tabs
  • 2 minutes of Accuweather--one tab
  • 2 minutes of Google Finance--one tab


This is a multiprocess benchmark in that it reflects some multitasking.

This session consists of the following:

  • 2 x 1000 word papers typed in Word 2010 at ~45 WPM
  • Four minutes of H.264 480p playback during some portion of word processing
  • 2 x 45 word emails sent via Outlook 2010 at ~45wpm
  • Five minutes editing a large Excel table


These benchmarks should give you an idea of what to expect in everyday use. Despite similar TSUP numbers, these results are going to differ because of the varying battery capacities in play. Remember again that Microsoft rounds off when calculating remaining capacity. Our metric is designed to show you how fast capacity will fall off if you use all systems under the same conditions over one hour.

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