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Old 23rd May 2015, 11:25 PM   #1
more10 is offline more10  Sweden
diyAudio Member
Join Date: Feb 2011
Location: Solna
Default Optimum cluster size for cd quality flac files

Today I formatted my sdxc card to be used in my pono player. I tried to find a recommended cluster size on internet but could not find any recommendations.

In order to calculate an optimum cluster size I needed the space overhed per cluster. It is 4 bytes. On average a flac file is 17 MB.

The optimal cluster size is 16 kB. Overhead is 0.01%.

Default cluster size is 128 kB giving an overhead of 0.3%.

I saved 200 MB on a 64 GB card. This is equal to a seventies LP reissued as CD.

In order to make my effort worthwile I sincerely hope you start formatting your drives using a cluser size of 16 kB. And post here if you do so that I can calculate the dividends of my work :-).
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