When you say render do you mean just rendering the timeline so you can play it OR do you mean export to a file when you have finished the project.
Rendering time varies depending on how many and what kind of effects you have assigned to the clips on the timeline.
Exporting involves rebuilding each frame to the output format you have chosen while also processing any effects.
Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=DxPrG3WUyz8
(Best viewed at 1080P and full screen)
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