Fastest DVD and CD type

allo chaps,
i was just wondering which type of cd and dvd media is the fastest. there are +-R and im not too sure what the difference is between them! any information would be a help
thanks

Consult the spec sheet for your particular iMac model; it lists the
read/write speeds for each media type -- with your optical drive:
http://support.apple.com/specs/imac/
Also check the site below for recommendations on blank media:
http://www.digitalfaq.com/media/dvdmedia.htm
Looby

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