Sirios Posted May 3, 2014 Share Posted May 3, 2014 Hi there, Recently I have bought External USB 3.0 Blue-Ray Drive, which consist of: External USB 3.0 Driver Box And BlueRay Drive UJ260AF The problem is it cannot reach supported 24x speed while reading from CD-ROM Disk. What is the problem? Big Thanks in advance Quote Link to comment Share on other sites More sharing options...
Moderator angerthosenear Posted May 4, 2014 Moderator Share Posted May 4, 2014 Hi there,Recently I have bought External USB 3.0 Blue-Ray Drive, which consist of: External USB 3.0 Driver Box [ATTACH=CONFIG]11508[/ATTACH]AndBlueRay Drive UJ260AF [ATTACH=CONFIG]11509[/ATTACH]The problem is it cannot reach supported 24x speed while reading from CD-ROM Disk. What is the problem?Big Thanks in advanceYou're probably hitting the limits for USB 3.0 data rate. BluRay has a pretty high bitrate, and at 24x speed, it's probably too much for USB 3.0.:googling:Looks to be max video bitrate is 40 Mbps and max data rate is 54 Mbps... so at 24x speed... that would be about 1296 Mbps. hmmm USB 3.0 maxes out at 5 Gbit/s so that doesn't quite give you an answer...Perhaps it's the program you are using to burn? Also, it's probably burning slower so it doesn't mess up / give you corruptions. Quote Link to comment Share on other sites More sharing options...
Sirios Posted May 5, 2014 Author Share Posted May 5, 2014 You're probably hitting the limits for USB 3.0 data rate. BluRay has a pretty high bitrate, and at 24x speed, it's probably too much for USB 3.0.:googling:Looks to be max video bitrate is 40 Mbps and max data rate is 54 Mbps... so at 24x speed... that would be about 1296 Mbps. hmmm USB 3.0 maxes out at 5 Gbit/s so that doesn't quite give you an answer...Perhaps it's the program you are using to burn? Also, it's probably burning slower so it doesn't mess up / give you corruptions.The problem is I am using the very common CD-ROM disk, and not a Blue-ray one. I am just copy files not burn it. No special app is used. Quote Link to comment Share on other sites More sharing options...
AESdecryption Posted May 5, 2014 Share Posted May 5, 2014 You're probably hitting the limits for USB 3.0 data rate. BluRay has a pretty high bitrate, and at 24x speed, it's probably too much for USB 3.0.:googling:Looks to be max video bitrate is 40 Mbps and max data rate is 54 Mbps... so at 24x speed... that would be about 1296 Mbps. hmmm USB 3.0 maxes out at 5 Gbit/s so that doesn't quite give you an answer...Perhaps it's the program you are using to burn? Also, it's probably burning slower so it doesn't mess up / give you corruptions.I think he's referring to a external drive configuration like this (specs here). 24x CD read is actually 1/9 the rate of 24x DVD read. DVDs would read at ~33.36 MB/s and CDs would read at ~3.707 MB/s (here). Quote Link to comment Share on other sites More sharing options...
djbe Posted May 17, 2014 Share Posted May 17, 2014 Isn't that just a general limitation for drives of this size? I think 24x is the maximum commonly quoted for cd-rom, but maybe that is the absolute peak speed at the edge of the cd, not the average? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.