[mythtv-users] Re-doing my backend

[Steve Smith]

On 05/02/2008, R. G. Newbury <newbury at mandamus.org> wrote:
>
> Steve Smith wrote:
> > On 04/02/2008, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
> >> Hi
> >>
> >> On Feb 4, 2008 11:46 AM, David Frascone <frasconebulk at gmail.com> wrote:
> >>> Humm . . Mine is a 2.2 or so Ghz P4 -- think it can keep up?
> >>>
> >> Is this just a backend ?
> >>
> >> If yes then 2GHz is plenty of power with plenty to spare.
> >>
> >> I run a 200MHz machine with all the services you mentioned , and the
> >> CPU never gets over 5% !
> >>
> >> To the person who also replied. A Core 2 Duo a 2.4Ghz is significantly
> >> faster than a 3GHz P4 ... hardly a valid comparison
>
> > A 200Mhz machine you say....interesting....
> >
> > I'm currently doing a theoretical exercise trying to figure out the
> lowest
> > power (as in electricity) backend you can get.
> >
> > The Mini-ITX boards can go as low as ~20w idle (or less), but are very
> > limited in PCI slots (useful in a backend!)
> >
> > Anyone know if you can get multi-PCI slot boards with these kind of
> power
> > requirements?
> >
>
> You can get 2-slot PCI riser cards for Via mini-itx motherboards so you
> can run 2 cards. My Via SP13000 mb with PVR500, pcdhtv3000 and 2 hard
> drives running used 37 watts. I seriously doubt that even a 200MHz chip
> was that thrifty. In fact, I remember that my first couple of x86 based
> machines were quite hot!
>
> For a backend however, a mini-itx would easily handle 2 PVR500's for 4
> tuners, and you can always add an HDHomeRun externally.
>
> Geoff
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Oh that's news I'd heard that the 2 way riser cards were a bit unreliable,
but you seem to have had no problems.... well all grist for the mill.

At the moment I run a combined f/e-b/e on a P3 900mhz but I have an old
Mini-ITX gathering dust (not capable of playing Mpeg2 unfortunately).

An idea I have at the moment is potentially to create a master/slave
architecture with the Mini-ITX as the master (on all the time) and the P3 as
a frontend/slave backend woken when it's needed.

Anyway it's all theoretical at the moment....

Cheers

Steve
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