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Summary:

I noticed the other day that Carrypad listed the battery discharge rates of the Paceblade P7 UMPC in their review, so I promptly downloaded the same application they used and gave it a whirl on the Samsung Q1. If you’re interested, the software is called Notebook […]

Ultralife9vplastic_1 I noticed the other day that Carrypad listed the battery discharge rates of the Paceblade P7 UMPC in their review, so I promptly downloaded the same application they used and gave it a whirl on the Samsung Q1. If you’re interested, the software is called Notebook Hardware Control and it’s actually very useful for any notebook computer, not to mention it’s free.

Since battery life seems to be particular concern for the UMPC class of computers (and rightly so), I’ve got a comparison of the battery discharge between the Q1 and the P7 after the jump. Bear in mind that the P7 has a 26 W/hr battery, while the Q1 sports a slightly higher capacity battery of 29 W/hrs.

WiFi off, screen brightness at 50%:

  • P7 = 11.3 Watts for a runtime of 2.3 hours
  • Q1 = 10.0 Watts for a runtime of 2.9 hours

WiFi off, screen brightness at 100%:

  • P7 = 11.9 Watts for a runtime of 2.18 hours
  • Q1 = 10.8 Watts for a runtime of 2.68 hours

WiFi off, screen brightness at minimum:

  • P7 = 8.1 Watts for a runtime of 3.2 hours
  • Q1 = 8.7 Watts for a runtime of 3.3 hours

USB devices disabled (through windows hardware control – disables Bluetooth and wifi) screen min:

  • P7 = 7.37 Watts for a runtime of 3.52 hours
  • Q1 = 8.3 Watts for a runtime of 3.49 hours

Remember that there could be some variance if you perform the same tests; the battery drain tends to jump around a little bit and I’ve tried to let it "settle" to provide an average scenario. Clearly one aspect that helps the battery life on the Q1 is the extra 3 Watt/hours in the battery; however, it appears that the Intel Celeron configuration is slightly more efficient than the Via setup from this preliminary analysis.

-kct

  1. What do you get with:

    WiFi *on* and

    - screen minimum
    - screen 50%
    - screen 100%

    On the Q1?

    Still awaiting LimeWire and eD2k on the Q1../

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  2. Very interesting, Kevin.
    I really appreciate your posting this information. Now I have an idea of what to actually expect during a day at the office. Good Info!

    BTW – Thanks for your video the other day too. It helped me resolve a screen rotation issue I was experiencing.

    Rich (Illuminator)

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  3. so the samsung q1 is probably the best umpc

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  4. Thanks for the link to the Notebook Hardware Control software, I’ll be using that heavily to monitor my power usage.

    I guess I don’t understand how you came to the conclusion that the “Intel Celeron configuration is slightly more efficient than the Via setup.”

    Your numbers indicate a discrepancy in the power consumption of the LCDs not in the processors. I don’t think your numbers can really be used to show that the Intel or VIA processor is more efficient as they support both claims at this point.

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  5. RMClock is a very good cpu clocking tool that dynamically scales the cpu speed … but does not have the battery part.

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  6. Kevin, I think you got a very wrong conclusion this time. Lets do a little bit of math.

    29 Wh in Q1/26 Wh in eo = 1.11 (around 11%)

    Now lets take one of the readings:

    11.3 in eo/10.0 in the Q1 = 1.11 (around 11%)

    So, from this simple operation you can conclude that both processors are consuming the same amount of energy. But…and here is the good part, if you check your Q1 processor performance, you will find that your processor in entering in what is called C3 State. Processor have 4 states of power saving, in the first 2 states C1 and C2, the processor is not saving almost any battery. After that you have C3 state where the processor save around 10 to 15% of battery compared to one processor that does not enter C3 state. Processor should enter in C3 state when the processor is not used heavily. The last one is C4 state; this gives the maximum of battery saving but to be honest. I only have seen this C4 state mentioned in some articles. I have not found a notebook with this state listed in the Performance Monitor Tool.

    The Q1 enters and works in C3 state, while the eo does not enter at all in this state due to bad configuration of the VIA processor in these devices. So the right conclusion would be that the VIA processor installed in eo/PlaceBlade is around 15% more efficient from the point of view of battery saving than the Intel Celeron installed in the Q1. But unfortunately, AMTek has not done a good job at all implementing these processors in these units.

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