Vorbis or Tremor (Was: Re: GPRS under FSO [Was: Re: What could be done to improve the OM development process?])

Federico Lorenzi florenzi at gmail.com
Fri Aug 15 08:16:37 CEST 2008

7MB/s should be enough for anyone :)

IMHO when you view the Glamo as just a few cores it becomes a lot cooler.

On 8/15/08, The Rasterman Carsten Haitzler <raster at openmoko.org> wrote:
> On Thu, 14 Aug 2008 20:32:22 +0200 Joachim Steiger <roh at openmoko.org>
> babbled:
>> qrazi wrote:
>> > The test referred to are with the nettop version of the Atom, the Atom
>> > N230.
>> > That CPU is paired with a standard 945GC chipset, which consumes between
>> > 15
>> > and 20 Watt. Hence the high power draws in those reviews.
>> >
>> > Intel also has the Z series, which include speedstep for even lower
>> > powerconsumption for the CPU itself, but they are also to be used with
>> > the
>> > Intel US15 mobile chipset. For a 1.6 GHz Z530 Atom, with the US15
>> > chipset, a
>> > maximum draw of 5 Watt is reported. That is way lower then the
>> > combination
>> > that PC Perspective has tested.
>> >
>> > Although probably still not low enough for use in a phone. That however
>> > might come in future generations, since Intels plans are to include
>> > more, if
>> > not all, of the chipset functions into the cpu itself.
>> >
>> thanks for summarizing it so well
>> thats also my conclusion: x86 is not ready yet for really mobile use.
>> we should evaluate it more when they can punch the '<1W when in use'
>> limit.
>> for comparison: our cpu currently uses <90mA when in use.
>> add the chipset, the lcm and interfaces (don't forget wifi, bt and gsm)
>> and then see battery sizes and capacity -> for a reasonable standby AND
>> talk time we need to not peak far beyond 1W when in use and be far
>> beyond that all the rest of the time.
>> also things like high-clocked ram (ddr compared to simple sdram) or
>> internal usb connections are energy suckers (thats why sdram with
>> <200mhz and things like sdio/spi/i2c/cmoslevel-serial is preferred to
>> usb and ddr ram.
>> its always getting things into a tricky balance to have something usable
>> at the end (and not a 'see how fluid it moves the icon'  - 'oh.. batter
>> is empty' - showcase ;)
> aye - and even so. arm-based solutions are cranking up the power. omap 3xxx
> and
> qualcomm's snapdragon are not slow-pokes. and they are far beyond anything
> intel has in performance-per-watt when you are in the 1watt (give or take)
> world. indeed you are very right - when intel have scaled DOWN to the
> existing
> embedded world.. we can talk, but as such an x86 phone is only a
> "development
> convenience" compared to arm (no cross-compiling from an x86 desktop).
> though we need to accept that we need to move beyond SDR into DDR/DDR2 ram
> and
> higher clockrates anyway - we need more performance to do the things people
> want, we just need to do it with the right generation of SOC that has
> reigned
> these power requirements in a bit... and well - maybe accept we need a
> meatier
> battery :)
> --
> Carsten Haitzler (The Rasterman) <raster at openmoko.org>
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