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<title>What do the units mean?</title>
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<h1>What do the units mean?</h1>
DC++ has always measured file sizes and speeds with the understanding
that 1024 of something make the next unit up. One kibibyte is
1024;
but when using the SI prefixes, one kilobyte is <span
style="font-style: italic;">supposed</span> to be 1000
bytes. In DC++ v0.402, the units were changed to the more
appropriate
kilobinary prefixes decided upon by the International Electrotechnical
Commission (IEC).
<table style="width: 100%; text-align: left;" border="0" cellpadding="2"
cellspacing="2">
<tbody>
<tr>
<td style="font-weight: bold;">New Prefix<br>
</td>
<td style="font-weight: bold;">Factor<br>
</td>
<td style="font-weight: bold;">Old Prefix<br>
</td>
<td style="font-weight: bold;">Factor<br>
</td>
</tr>
<tr>
<td>kibi-<br>
</td>
<td>2<sup>10</sup></td>
<td>kilo-<br>
</td>
<td>10<sup>3</sup></td>
</tr>
<tr>
<td>mebi-<br>
</td>
<td>2<sup>20</sup></td>
<td>mega-<br>
</td>
<td>10<sup>6</sup></td>
</tr>
<tr>
<td>gibi-<br>
</td>
<td>2<sup>30</sup></td>
<td>giga-<br>
</td>
<td>10<sup>9</sup></td>
</tr>
<tr>
<td>tebi-<br>
</td>
<td>2<sup>40</sup></td>
<td>tera-<br>
</td>
<td>10<sup>12</sup></td>
</tr>
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<td>pebi-<br>
</td>
<td>2<sup>50</sup></td>
<td>peta-<br>
</td>
<td>10<sup>15</sup></td>
</tr>
</tbody>
</table>
<br>
For more information about the binary units see the <a
href="http://physics.nist.gov/cuu/Units/binary.html" target="_blank"
class="external">National Institute of Standards and Technology</a> <img
title="External Link" src="external.png" border="0" height="10"
width="10">.
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