Avarice28 said:
2x Blu-ray Drive (72Mbps(9MB/s))
Single Layer (2x CLV) - Constant Linear Velocity (Same speed across entire disk)
Entire Blu-ray Disk is read at 9MB/s.
12x DVD-Rom Drive SL (9.25MB/S-15.85MB/s(AVG ~8x(10.57MB/s) DL (4.36MB/s-10.57MB/s(AVG ~6x(7.93MB/s)
SL(DVD-5) 12x Max (5-12x Full CAV) - Constant Angular Velocity (Speed Varies from edge to edge)
DL(DVD-9) 8x Max (3.3-8x Full CAV) - Constant Angular Velocity (Speed Varies from edge to edge)
Speeds vary on DVD drive and can go as high as 9.25 mb or as low as 4.36 mb (dual layer) for 360
consistant speeds across the Blu-ray and can go as high as 9mb for the PS3 (consistantly).
sources: Hitachi 12x DVD-Rom faq (page 2)
www.hitachi.us/supportingdocs...ead%20speed%22
What is DVD?
www.videohelp.com/dvd
Blu-ray.com Blu-ray Faq
www.blu-ray.com/faq/
original source: http://forum.beyond3d.com/showthread.php?t=42157
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Indeed, a lot of people get that mixed up. I imagine that the reason Blu-Ray games sometimes need installs is due to the enormous capacity of the discs and the seek times required to retrieve the data from the discs. Unless the data is organized in a very specific way, it will take a longer time to search for a single piece of information off of a Blu-Ray than the lower capacity DVD.
