Here is a DV 16.9 timeline to a DVD MPEG2 file speed render test with an overclocked 2.4 Ghz Quad.

Here is a short clip showing 4 different types of video formats edited together on a timeline which still played back in realtime using EDIUS. The video clips were playing from normal single SATA drives. Computer is a 2.4Ghz QUAD overclocked to run at 3.2 Ghz. CPU was hitting 83% when playing back the timeline.