Testbed and Methods
The hard drive of the Samsung Q30 Plus was formatted in NTFS before the tests. Then I installed Microsoft Windows XP Professional with DirectX 9.0c, the system drivers included with the sub-notebook and Windows Media Encoder 9.0 with Windows Media Player 9.0. Power-saving services, the audio subsystem, network services were all disabled for the duration of the tests. The notebook was tested at the maximum brightness and maximum resolution (1280x768) of the screen.
I set the Windows Taskbar to hide automatically and also chose the following settings: “Classic” Desktop theme, no background image, no screensaver.
Two power modes were used. First, I selected the Always On power mode for the maximum performance and the shortest battery life. Then, I switched to the Max Battery mode for the maximum battery run-down time.
- Performance benchmarks: synthetic (SiSoftware Sandra 2005, PCMark 2004), office and multimedia (Business Winstone 2004, Multimedia Content Creation Winstone 2004), and games (3DMark 2001SE Pro , Quake 3, Unreal Tournament 2003)
- Battery life tests (Battery Eater Pro 2.60)
There are three test modes in Battery Eater:
- Classic – the system bears the maximum and evenly distributed load
- Reader’s test (the pages are browsed through each 15 seconds)
- Idle mode
In my tests I used the first two modes as they are in Battery Eater, but in the Idle mode (when the test utility doesn’t put any load of its own on the notebook) I played a DVD movie. DVD playback is one of the hardest operational modes for a notebook’s battery as the high power consumption of the optical drive combines with a high brightness of the screen and a very high sound volume.