The fastest drives now burn at 4X speeds (where 1X for DVD is 9X for CD, as far as data rate is concerned) Pragmatically, 4X means that you can burn a full DVD in under 15 minutes But you'll need to use "4X Certified" media to hit these speeds Media quality is an important factor in determining compatibility with DVD players DVDRAM is a DVDbased disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVDRAM media and the appropriate DVD writers DVDRAM media have been used in computers as well as camcorders and personal video recorders since 1998 In May 19, Panasonic, the only remaining manufacturer of DVDRAM discs, announcedThe table below lists the DVDROM drives currently known to be compatible with DVDRW media The far right Setting column refers to the disc compatibility setting Default (Mode 1) or Alternative (Mode 2) are the two states a DVDRW disc can be in Refer to the Other support information section at end of this page for further infor