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Benchmark Results: Power Consumption

Three Budget AMD Brazos-Based Notebooks Rounded Up
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All of the notebooks die when you hit ~5% of battery life, which is a fairly standard alarm for Windows 7.

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 a 1% or 2% drop over six hours for HP's dm1z.

Remember that IE8 is threaded (one tab, one thread). So, this multi-threaded benchmark includes navigation of Web sites, including scrolling calculated to a reading speed of about 200 WPM. On Amazon, we shopped for GPS units and common biology textbooks.

This session consists of the following run sequentially in the order listed:

  • 24 minutes of Wikipedia Reading (4 Entries): one tab per entry
  • 4 minutes of Amazon.com: two tabs
  • 3 minutes of CNN.com: two tabs
  • 2 minutes of Google Finance: one tab
  • 2 minutes of Accuweather: one tab
  • 25 minutes of Flash 10.1 (YouTube 360p, H.264, hardware acceleration enabled): 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 ~45 WPM
  • Five minutes editing a large Excel table


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.

All notebooks die when you reach about 5% of battery life, which is the standard alarm for Windows 7.

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