The Matroska Media container is a very popular, open standard Multimedia container which is usually found as .MKV files. It is a very popular format in enthusiast circles and can be played directly in Windows Media Player with suitable codecs installed. We use the Combined Community Codec Pack (CCCP).
We ripped our BluRay disc of Batman: Dark Knight to 1080P MKV and used Windows Media Player to playback the file.
While the actual percentage usage flickered between eight and 12, the average usage was just shy of 10 per cent, which leaves plenty of spare cycles for multitasking.
This Dell XPS is so cool