[mythtv-users] Secrets for low powered front ends ?

PJR pjrobinson at metronet.co.uk
Fri Oct 14 23:40:49 UTC 2011

On 14/10/11 23:45, William Kenworthy wrote:
> On Fri, 2011-10-14 at 22:59 +0100, Tim Draper wrote:
>> On 13 October 2011 21:41, Mark Lord <mythtv at rtr.ca> wrote:
>>         On 11-10-13 02:31 PM, Richard Morton wrote:
>>         >
>>         > So at 35wtdp the i3 is almost as efficient as an atom and
>>         almost as powerful as
>>         > a q6600 circa 2007 ( its not overclocked - the q6600 is
>>         legendary how far you
>>         > can clock it).
>>         A typical Atom CPU has a TDP of between 6 and 8 watts.
>>         Add to that the TDP of the Ion2 (13W) to get a proper
>>         comparison.
>>         So.. Atom+GPU(Ion2) is around 20W TDP.
>>         That's quite a bit less than an i3 at 35W.
>> but TDP is not fixed on i3, like the atoms TDP is. also, some atoms
>> run in the 13w area.
>> i'll presume the ion also doesnt include throttling like the i3 does.
>> i'm going to go out on a limb here - i bet theres next to nothing in
>> terms of power consumption difference - maybe 20-30p/month for 24/7
>> consumption, presuming the i3 is idle.
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> I have both a Jetway and a zotac ion N330's as diskless systems.  Both
> use approximately 25-30W according to a kilawatt type meter.  Of that,
> the power brick uses 9W in each case - even when not plugged into the
> box!
> Mind you, thats still a fraction of the recycled desktop systems they
> replaced.  Its now been around 2 years since I got the first one, and
> its played everything Ive put at it (i.e., what I want to watch).  By
> the time the off-air etc comes up with something it wont play, it will
> easily be time to replace them anyway.  In the meantime I have been
> watching on power saving hardware, that at the time cost less than
> non-power saving alternatives.
> Also, I find that power saving on non-atom type systems is not the
> easiest thing to get right, and keep it right - are you getting what you
> think you are getting?
> BillK
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BillK, which Jetway board are you using? I'm looking at the JNC98-525
for a FE/BE with an SDD for s/w, 2xCaviar Green HDDs in Raid 1 for myth
storage of audio and TV.  I want low TDP, hence the SDD and Caviar
Green.  Usage: music and recorded HD TV @ 1080i.  System will 'sleep' on
RTC until a recording is due to cut down on power and noise (even though
it will live in its own "server room", ie cupboard under the stairs,
which also houses a GSHP).

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