cd burner....
- Thread starter Tommie
- Start date
FASTEST does NOT ALWAYS mean the MOST RELIABLE as media and other factors can play a big part in this for them to burn at MAX speeds DVD at the minute is 16X MAX and cdr 52/54 but like i said depends on the media if its successful or not 
anyhow....
heres some info i found on the net regards burn speed times
anyhow....
heres some info i found on the net regards burn speed times
Fastest CD Write mode - 52x Full CAV (starts at just under 24x and ramps up throughout) - at 52x, the last bit can be rather iffy, so a speed of 40x or 32x is normally optimum if you can't trust the media at full speed.
Fastest CD rewrite mode - 32x on "Ultra" media, often by zone-CLV (16x/24x/32x steps - a few drives do P-CAV mode on CD-RW).
Fastest DVD mode - 16x CAV on DVD+R ... DVD-R is catching up, drives that us Zone-CLV (eg. Pioneer DVR-108/A08) are slower, but may give better results as tuning media strategies is easier under Zone-CLV.
The terms:
CAV - rotates at constant RPM (angular velocity), while transfer rate ramps up throughout.
CLV - maintains a constant linear velocity and transfer rate, therefore the RPM is lowered to compensate for the increasing circumference.
Zone-CLV - Burns in steps of CLV, stopping to bring RPM up to the initial level and continue at the next higher transfer rate (this requires the same kind of linking that is used for underrun recovery).
P-CAV - Starts using CAV, at constant (maximum) RPM, then makes a stepless changeover to CLV, continuing at constant transfer rate.
An interesting result on some DVD writers, is "8x near CLV" - actually 8x P-CAV, but the initial ramp-up from 7-8x is so sort, that the burn time is only a fraction over half the 4x burn time, and the advantage of 16x is no more than 30%, but the price of media is higher and the quality problems are worse.
Fastest CD rewrite mode - 32x on "Ultra" media, often by zone-CLV (16x/24x/32x steps - a few drives do P-CAV mode on CD-RW).
Fastest DVD mode - 16x CAV on DVD+R ... DVD-R is catching up, drives that us Zone-CLV (eg. Pioneer DVR-108/A08) are slower, but may give better results as tuning media strategies is easier under Zone-CLV.
The terms:
CAV - rotates at constant RPM (angular velocity), while transfer rate ramps up throughout.
CLV - maintains a constant linear velocity and transfer rate, therefore the RPM is lowered to compensate for the increasing circumference.
Zone-CLV - Burns in steps of CLV, stopping to bring RPM up to the initial level and continue at the next higher transfer rate (this requires the same kind of linking that is used for underrun recovery).
P-CAV - Starts using CAV, at constant (maximum) RPM, then makes a stepless changeover to CLV, continuing at constant transfer rate.
An interesting result on some DVD writers, is "8x near CLV" - actually 8x P-CAV, but the initial ramp-up from 7-8x is so sort, that the burn time is only a fraction over half the 4x burn time, and the advantage of 16x is no more than 30%, but the price of media is higher and the quality problems are worse.
Yes: that's about right - 52x32x52 (though some may push it to 54) for CD-R/RW/ROM. Many drives aslo read CD-RW at reduced speed.Tommie said:
For DVD, it's more complicated, as there are 7 possible write medias, and also several read types (written DVD media is often read at lower speed)
16x on DVD+R (the start of the "16x" writers)
16x on DVD-R (not as common, -R speeds usually lag - the NEC 3500A is 16x both)
8x on DVD+RW (WAIT! - it's coming soon! - current drives are stuck with 4x)
4x on DVD-RW (don't expect 8x for a while, if at all)
4x on DVD+R DL (previous generation was 2.4x)
But if you want the fastest CD-R performance, go for a separate CD-RW drive, most DVD writers lag behind in this area, at least by a step or two.
I like the Sony CRX320/Liteon 5232K combo in this role - it's a good, fast CD-RW drive (though Sony cuts to 40x unless you switch to 52 by holding eject until it blinks) and also gives you a second chance to read DVD, with a drive that can also report PI/PIF errors under popular scanning programs - this drive and an NEC 3500A is a very strong combination, as they tend to cover each other's weaknesses.