Clarifying the Blu Ray read speed

[MikeB]

Fumanchu said:
But by the nature of games they are randomly accessed. How do you control the 4GB span with a game like GTA or Oblivion with open worlds that anyone can traverse on a whim?

The better quality textures and assets carry a slower seek time which renders in frame rate issues and then you try to counter this with a pain in the ass mandatory install. This doesn't fit the mould of non 'legacy' technology.

Going beyond 6.8 GBs on the 360 requires additional discs. Obviously Blu-Ray's worst case scenario seektimes are far far far faster than changing discs!

Often used files, can be stored on the PS3's default harddrive. Also like data is often duplicated on DVDs (so you don't have to swap discs all of the time to load a re-used file), you can also make use of data duplication on a Blu-Ray disc (so you'll have less lens movement, reducing seektimes).

If you have a 20 GB game on a 25 GB capacity disc, this may make much sense if you're very technically ambitious. Why let that 5 GB go to waste if you can reduce seektimes, even only by a little through data duplication?