[vdr] Mid range CPU choice

Magnus Hörlin magnus at alefors.se
Tue Aug 21 18:58:05 CEST 2007


covert covert wrote:
> About to step into the deep end and build my first VDR box. In fact 2
> of them at the same time both with the exact same specs.
>
> All parts are going to be new.
>
> New CPU's are a lot more confusing than the simple days of single
> cores at fixed clockspeeds.
>
> My question is what CPU should I chose for good noise reducing , heat
> reducing solutions.
>
> For processing power and cost I am looking at AMD AM2 4000 and Intel
> Duel Core E2140 and Intel core2 Duo E4400. I am open to other
> suggestions as long as they can currently be purchased in store.
>
> Since the system will be spending 95% of it's time idle I want a CPU
> that can drop down to the slowest possible clock speed with the least
> power consumption. I will also be using temperature controlled fans to
> keep it real quiet and any other ways I can find to drop down power
> and noise.
>
> Advice on the best CPU choice would be much appreciated.
>
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> vdr at linuxtv.org
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>
>   

I think AMD's are perfect for this since they consume less than Intels 
at low load. I have a Sempron 3200 on a mobo with Nvidia 7050 and HDMI 
onboard together with an 80W picoPSU. This gives me a fanless VDR 
frontend that draws only 30W from AC mains during TV replay and cost 
about €200. And at night it gives enough power to do as much h.264 
encoding I need. I guess you'll want DVB cards and disks in your box, 
but I prefer to have them on my server in the attic. If you wait just a 
few weeks you'll have 65nm Sempron's to give you even more processing 
power per Watt.

/Magnus H




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