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CDRW Drives Hit 52X Speeds
Sr.Mixalot writes "Just when you think you couldn't burn those shared MP3s any faster, Asus comes out with a 52X Burner. This review at Hot Hardware shows just how fast this drive is versus a Plextor 48X unit. Amazingly, this new breed of CDRW Drives can burn a complete 700MB CD in about 2.5 minutes!"
Actually they are using CLV, but it is Z-CLV (Zone-CLV) burning usually starts around 16x, then ramps up to 20x a little ways into the disc, then to 24x, and so on. If you're only burning a half full disc, you'll never hit the zone where u get into the higher speeds. I wish they would stop with this Z-CLV crap and just do plain old CLV. If they used 52X CLV, then a disc would be able to be burned in about a minute and a half. Z-CLV requires the burner to actually stop burning, spin the disc up to the next zone speed, and then resume the burn. This stopping and starting can introduce errors in the disc, however they are usually taken care of by the ECC built into the ISO9660 format, The error correction on Audio CDs isn't as sophisticated, so u can sometimes hear pops on the disc where the burner stopped and restarted. Also since the error connection is being used to fix errors purposely put there by the burner, it leaves less correction to fix what it was put there for, the scratches that are usually inevitable throughout the life of the disc. If you want to burn discs without this Z-CLV crap, then burn at 16x or lower, 16x or lower on most Z-CLV burners is usually CLV mode. So 1x-16x=CLV, >16x =Z-CLV
Geez, I thought I'd never find this. It shows the testing procedure for CD-R/RW media by Sony (which put together the Orange Book standards with Philips (and Kodak?)). That should give a little insight as to what's being tested and what would have to be modified to work at a faster speed. I've also wondered about this. Hope it helps.