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Project:Passive cooled pc: Difference between revisions
From London Hackspace Wiki
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some maths advice
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m (some maths advice) |
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|CPU fan: | |CPU fan: | ||
|5 dB | |5 dB | ||
'dB' is an exponential scale, so you need to convert the dB values to a linear energy scale before you can add or subtract them.. | |||
In a spreadsheet, if the dB value is in cell B2, '=EXP(B2/10*LN(10))' is the sound energy. | |||
The dB value from a sound energy in C8 is '=LOG(C8)*10'. | |||
{| | |||
|PSU Fan: 34dB | |||
|- | |||
|HDDs: 44dB | |||
|- | |||
|GPU fan: 55dB | |||
|- | |||
|CPU fan: 40dB | |||
|} | |} | ||
For reference: | For reference: | ||
