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Why does a Music Server require high processing CPU power?

I noticed that some music servers use, for example, a dual multicore CPU’s running under a custom assembled operating system.  In addition, the server is powered by a linear power supply with choke regulation and a large capacitor bank utilizing the highest audiophile grade capacitors.  Various other music servers have similar high CPU processing capabilities.  

I know that music is played in real-time so there is not much time to do any large amounts of processing.  I also know that the data stream needs to free of jitter and all other forms of extra noise and distortion.   I believe that inputs and outputs are happening at the same time (I think).

I also know that Music Servers needs to support File Formats of FLAC, ALAC, WAV, AIFF, MP3, AAC, OGG, WMA, WMA-L, DSF, DFF, Native Sampling Rates of 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz, 705.6kHz, and 768kHz and DSD formats of DSD64, DSD128, DSD256 and DSD512 including Bit Depths of 16 and 24.  

Why does a music server require high processing power?   Does the list above of supported formats etc. require high processing power?  Assuming the Music Server is not a DAC, or a pre-amp, what is going on that requires this much processing power?   

What processing is going on in a music server?  How much processing power does a music server require?  

Am I missing something?   Thanks.   


hgeifman
djones51
4,947 posts
 
The only reason I can think of is if you're doing heavy digital processing. 
hgeifman OP
2,110 posts
 
@cleeds,  My Aurender N10 uses a FPGA-based All Digital Phase-Locked Loop System  This is "An All Digital Phase-Locked Loop system (ADPLL) incorporating Field-Programmable Gate Arrays (FPGA) with OCXO clocks precisely times digital audio data transmissions and minimizes jitter to below negligible levels".  

I have no clue what this means.  
mlsstl
1,378 posts
 
I've never had a problem with using lower power computers as music servers. The only reason I know that you might want a more powerful computer is if you are doing room correction or equalization, or if you are actually editing digital music files -- say doing a mix-down of multiple tracks with equalization or other digital effects. Not too many people do that for playback on their home system.

One other reason might be is if you are asking the computer to do multiple tasks during playback, with those other tasks having nothing to do with music.

Curious where you got the idea that an unusually powerful machine was needed.
hgeifman OP
2,110 posts
 
@mlsstl, I have no clue if unusually powerful machines are or are not needed.  

I found one music server that has dual Intel Xeon Scalable 10 core – 20 thread CPU’s for 20 cores – 40 threads in total and Twelve 4Gb custom order industrial memory modules for 48Gb in total.  

 I was just curious about much processing power a music server actually needed.  I have the Aurender N10 Music Sever and it sounds terrific.  






mlsstl
1,378 posts
 
In thinking about it, the choice of the underlying PC for a branded music server probably has more to do with marketing than anything else. If you have a maker of audiophile equipment that is going to get a couple of grand for the product, you might as well put in a more powerful PC. That'll impress some buyers whether the power is needed or not.

Just a thought.


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