Return to the archive index

Re: Pentium M motherboard (3.5" SBC)

From: "M. J." <>
Date: Thu, 28 Aug 2003 12:49:28 GMT

Hi Carol,

The email I sent out was this one:
---------------------
Hi guys,

I read about the EPIA 800's power consumption in the wear-hard 
archives, and a couple of questions popped up in my head:

Reading some VIA datasheets, I concluded the following information:
* The 800 MHz C3 (Samuel 2 core): Specified average of 12.0W and a max 
of 19.4W.
* The 733 MHz ESP7k (Nehemiah core): Specified average of 4.4W and a 
max of 6.0W (although, if I've understood it correctly, you should be 
getting 1-4.4W provided you have a HLT idle loop setting the CPU into 
StopGrant/AutoHalt mode).

What I'd like to know, am I looking at the same CPU as the one in the 
EPIA 800 measured in the figures below=3F
>
> > POST consumption (just board with some ram)
> > 14.19 watts
>
> Power consumption: 9.6W/Idle 13.4W/MP3playback
> System was booted from a CompactFlash.
>

If so, could one expect the power usage is dropped by somewhere around 
10W by using the 733MHz Nehemiah based CPU=3F (given the other components 
draw just as much CPU as with the EPIA 800.)

That'd mean the system would use ~8W playing MP3s, or.. =3F
---------------------

Regards,
-- Mikael J

> Hi, M.J.
> 
> I don't remember seeing your name on the list before, but I could 
> have
> blinked... Anyway, just wanted to let you know I received this 
> latest.
> 
> Cheers --
> Carol
> 
> At 05:11 PM 8/27/03 +0000, you wrote:
> >>
> >> here is the motherboard I plan to use
> >> http://www.advantech.com/products/Model=5FDetail.asp=3Fmodel=5Fid=3D1-
> > > D6LZW</a>
> >> bu=3D
> >>
> >Have you considered a Mini-ITX board based on the new 733 MHz 
> > Nehemiah-
> >based C3=3F  The CPU itself is stated to use 1W in AutoHalt-mode 
> > (i.e., 
> >HLT idle loop under Linux/BeOS/2k), 4.4 typ and 6W max.  Add to that 
> >the other components in the mainboard, and you have something that's 
> >vastly faster than the Geode-based 3.5" SBC, granted slightly larger 
> >(17x17 cm), but it shouldn't consume /much/ more CPU.  Plus, I guess 
> >you could run it on a lower voltage if you change the multiplier/bus 
> >speed, still quite fast, but not as power hungry.
> >
> >As per the e-mail I sent to the list (did you guys get it, or did 
> > you 
> >just ignore me=3F :), it seems one'd get ~6-8W lower power consumption 
> >than the Epia-800, tested before on the list, i.e., around 3-4W idle 
> >(if I've done the calculations correctly, that is.)
> >
> >--
> >
> >
> >On another note, I'm looking for a display of some sort, and I'm not 
> >sure what to get.  I do know I want some kind of head-mounted 
> > display.  
> >How would one go about acquiring/building a HMD that I can see 
> > through, 
> >i.e,. super-imposing the display on the real world=3F
> >
> >
> >
> >Thanks in advance,
> >-- Mikael Jansson.
> >
> >
> >> 
> >> Jennifer Ann Pellinen
> >> 
> >> --- Steve Barr <> wrote:
> >> > http://www.theinquirer.net/=3Farticle=3D11209
> >> >
> >> http://www.kontron.com/products/pdproductdetail.cfm=3FkeyProduct=3D
> > > 35768</a>
> >> kps=3D1081&kp=3D75
> >> >
> >> http://www.kontron.com/techlib/datasheets/D=5FJREX-
> >> PM=5FSBC=5Fwith=5FPentium=5FM.pdf
> >> > 
> >> > Steve
> >> > -- 
> >> > http://www.stevebarr.com
> >> > 
> >> > 
> >> > --
> >> > Subscription/unsubscription/info requests: send
> >> > e-mail with subject of
> >> > "subscribe", "unsubscribe", or "info" to
> >> > 
> >> > Wear-Hard Mailing List Archive (searchable):
> >> > http://wearables.blu.org
> >> > Please, *PLEASE* don't subscribe through a
> >> > forward/expander/false domain
> >> > 
> >> 
> >> 
> >> =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
> >> Do you Yahoo!=3F
> >> Yahoo! SiteBuilder - Free, easy-to-use web site design software
> >> http://sitebuilder.yahoo.com
> >> 
> >> --
> >> Subscription/unsubscription/info requests: send e-mail with 
> > > subject 
> >> of
> >> "subscribe", "unsubscribe", or "info" to wear-hard-
> > > 
> >> Wear-Hard Mailing List Archive (searchable): http://
> > > wearables.blu.org
> >> Please, *PLEASE* don't subscribe through a forward/expander/false 
> >> domain
> >> 
> >
> >--
> >Mikael Jansson
> >http://dundermusen.net
> >
> >
> >
> >--
> >Subscription/unsubscription/info requests: send e-mail with subject 
> > of
> >"subscribe", "unsubscribe", or "info" to 
> >Wear-Hard Mailing List Archive (searchable): http://
> > wearables.blu.org
> >Please, *PLEASE* don't subscribe through a forward/expander/false 
> > domain
> > 
> 
> 
> --
> Subscription/unsubscription/info requests: send e-mail with subject 
> of
> "subscribe", "unsubscribe", or "info" to 
> Wear-Hard Mailing List Archive (searchable): http://wearables.blu.org
> Please, *PLEASE* don't subscribe through a forward/expander/false 
> domain
> 

--
Mikael Jansson
http://dundermusen.net

--
Subscription/unsubscription/info requests: send e-mail with subject of
"subscribe", "unsubscribe", or "info" to 
Wear-Hard Mailing List Archive (searchable): http://wearables.blu.org
Please, *PLEASE* don't subscribe through a forward/expander/false domain

+Previous Message in Thread | Next Message in Thread

From Wear-Hard Mailing list Archive (WH)
Maintained by R. Paul McCarty

Archive created with babymail