1.0 link Rainbow Dash Network http://rainbowdash.net/ Cerulean Spark (ceruleanspark) http://rainbowdash.net/ceruleanspark http://rainbowdash.net/notice/3502706 @<span class="vcard"><a href="http://rainbowdash.net/user/6761" class="url" title="Pony"><span class="fn nickname mention">pony</span></a></span> Obviously if they choice were just optical drive or nothing, the machine without one would be lighter, but most manufacturers tend to stuff the area that would have contained the optical drive with battery, which tends to weigh about the same.