Samsung Q1 vs. Q1P: battery life test

Several weeks have passed since the first Q1 Pentium M 1GHz battery test (on the right) and around it an extensive discussion has begun on the presence of LED display backlights. Is there a LED backlight? This is still not exactly known, despite the rather active discussion and requests from suppliers.
Whether the LED backlight is used or not, the battery life of the Q1P increased as well as the brightness of the backlight increased by approximately 40%. The attempt to contact representatives of the Samsung PR service and get answers from them was not successful. In the absence of official information, comprehensive battery life tests were conducted.
So, we present you the measurement methodology and programs used:

• Battery Eater Pro v.2.7
• The battery is calibrated before the test.
• One battery was used to eliminate errors.
• BE Pro runs on Windows XP Tablet Edition 2005 on both machines.
• Both devices have 1 GB of memory (the strap is the same).
• All automatic power management settings are disabled.
• The backlight in Q1 is set to maximum, in Q1P at 60% (in this mode, the backlight is the same).
• Disabled power saving mode in BIOS.
• Speed ​​Stepping is disabled in Q1P BIOS.
• WiFi is included in both devices.

Accordingly, there are two main differences between the devices:
900 MHz Celeron processor vs. 1 GHz Pentium M and possible differences in display backlighting. In preparation for the test, everything was done to ensure that the computers were configured as equally as possible. Keep in mind: the test aims to get the minimum operating time under maximum load. Accordingly, the operating time obtained as a result of the test may seem to you to be too short, but remember that this is the operating time with the maximum load and during normal use the device will work longer. So, consider the results. This chart shows that Q1 lasted 93 minutes:

And this schedule is already Q1P with a running time of 116 minutes. I should note that the battery may not have been fully charged. Nevertheless, the results are quite indicative and quite suitable for comparison.


As can be seen from the tests, the Q1P runs 25% longer. This means 15W of consumption in Q1P and 18.7W in Q1. The 25% advantage is quite tangible and scalable. For example, the time of a normal Q1 operation is approximately 2-2 hours and a half turning into 2 and a half 3 hours per Q1P. These figures are calculated, in actual operation there may be discrepancies both in the direction of decreasing the battery life and in the direction of increasing.
Despite the fact that there is still no official response from Samsung regarding changes in the backlight, nevertheless, the following Q1P differences can be noticed:

• The Q1P screen is about 40% brighter than its predecessor.
• Under roughly equal conditions, Q1P works 25% longer.

We hope that this test will help you in choosing between the various UMPC variants of both Samsung and other manufacturers.

Source: Kevin C. Tofel @ jkOnTheRun (Eng / Rus. )