A1 Motherboard specs diagram

[Tiago Marques]

Also:

"The AMD Geode LX 800 at 0.9W processor operates at a maximum power of 3.6W (TDP)"

The 0.9W figure was a normal usage scenario, not the worst case. Given
that the Geode was running full steam all the time, it was probably
running closer to 3W than anything lower - except when suspended, of
course.

The C7-M also has a cool feature with dual clock generators, which
means it can change to 1GHz and 400MHz back in forth in one clock
cycle - this saves a good amount of power. Probably all laptop CPUs
nowadays(even Atom) take thousands of cycles to do that and they're
stalled for most of that time:

http://www.via.com.tw/en/products/processors/c7-m/twinturbo.jsp

If the VX855 is not consuming much power, I would expect the XO-1.5 to
actually have a better battery life.

Best regards,

Tiago Marques


On Mon, Jul 20, 2009 at 5:19 AM, Richard A. Smith<richard at laptop.org> wrote:
> Carlos Nazareno wrote:
>
>> This has a power consumption of 3.5W which is significantly higher
>> than the AMD 0.8-1.3W of the XO-1's AMD Geode LX 700. This is why I
>> was asking about battery life -- it's a concern for using the XO with
>> common tasks like as a mobile e-book reader.
>>
>> I'm pretty certain there's going to be a hit on battery life compared
>> to the XO-1, but I'm pretty excited about the faster chip + upped
>> memory as this now means that the XO will now be able to surf sites
>> heavy with AJAX and Flash as well as be able to watch Flash video
>> within the browser such as on sites like YouTube -- something not
>> decently possible with the XO-1.
>
> Power is a curious animal.  Quite often it works very different than you
> would expect.
>
> The peak power draw of the XO-1.5 will be quite a bit higher than the
> XO-1.  However, the C7 can enter much lower power states than the Geode
> could and it can enter them automatically and quickly.  Until we measure
> it we just don't know.
>
> --
> Richard Smith  <richard at laptop.org>
> One Laptop Per Child
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