Apr 17, 2003 05:57 pm To Burn 24x your burner must be able to handle 24x. If your Burner can burn 10x, thats as fast as you can burn any CD-R that is 10x or higher.
CD recording Speed
Posted on Apr 17, 2003 05:48 pm
Alanfc
Member Since: Mar 13, 2003
Hello-
I have been doing backups with my new CD-RW machine and its great but very slow.
I am doing it as Data only. So my question is about the speed. I have Windows XP and Nero Express (came bundled with the TDK -USB 2.0 portable CDRW recorder I bought)
two things:
1)since its data shouldn't it be fast ? Timewise its taking about the full duration of the song itself to record on to the CD recorder. When I'm in the Nero screen, the speed that Nero says it can max out on is 10x. However the TDK box says it can go like 24x or something. Shouldn't that be fast !? (I must admit I can't find any simpleton explanation for the "__ X" measurements of speed.) Is it the CD-RW disc I'm using - is CD-R faster? I don't care about the speed that much but if I can do it faster without any loss of quality (data only-not Audio) I'd love to know.
2) is it the "media" ? Are CDR's rated for speed.?
Thanks for your patience
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Apr 17, 2003 05:57 pm To Burn 24x your burner must be able to handle 24x. If your Burner can burn 10x, thats as fast as you can burn any CD-R that is 10x or higher.
Apr 17, 2003 06:10 pm Hi-thanks
Ok I see now that my TDK claims to "write" at 24X
Do I need a CD-R that is 24X and that'll be it?
I guess the terminology escapes me. Like I said I can't find any simple explanation for it.
For example, does 24x mean 24 times the speed of what...
If I'm doing Data instead of Audio isn't it just like saving a huge Word document or something?
Thanks
Apr 17, 2003 06:24 pm As far as I know, the X stands for the speed of the original CD Writers. So, when they improved on the original, and it was twice as fast, they called the speed 2X, and when the speed was 4 times as fast they called it 4X and so on.
One thing that may be slowing down your burning speed (in this instance I'm using burn and write as interchangeable even though there are technical differences, but in terms of vernacular, people generally use them the same way) is that your computer may only have USB 1.0 connections which is not allowing the data from your computer to your writer as fast as the writer is ready to accept it.
Apr 17, 2003 06:28 pm Aha !
My TDK machine and my Dell PC connection are USB 2.0 Whew!
I see now that the "X" is relative to the old standard rather than TIME.
Thats really helpful-thanks
Apr 17, 2003 06:42 pm x is relative to time.
if you burn a 60 minute audio CD at 2x it will take 30 min. The same CD at 4x will take 15 minutes.
i believe the probelm lies in the CD-RW discs you are using. My TDK VeloCD burner is 12x 10x 32x meaning it records (CR-R) at 12x, rewrites (CD-RW) at 10x and reads at 32x. If your burner writes at 24x but only rewrites at 10x, then you can only rewrite at 10x.
i know it's frustrating.. when i backup sometimes i use CD-Rs, sometimes CD-RWs depending on the situation. -j
Apr 17, 2003 06:46 pm The speeds on your burner should be three numbers.
aX bX cX
The three speeds correspond to Read, Write, and ReWrite. Some drives are listed in different orders, so check the manual (sometimes they will list this on the box as well).
Typically, the Read rate is the highest, Write speed the second highest, and ReWrite the lowest.
Read refers to reading any CD of course, Write refers to burning a CDR, and ReWrite refers to burning a CDRW. CDRW's typically can't handle the speed that a CDR can because of its chemical composition, as well as the fact that CDRW's typically need to 'erase' or 'format' each bit before it's placed, so a typical difference of 100% speed is commonplace. (I.e. a 24X capable burner can usually only do 12X w/ a CDRW)
The speeds are relative to a full format CD. 650MB equates to 74 minutes. So, a 1X burner, burning 650MB of data, would take roughly 74 Minutes to burn. A 2X would take 37 minutes, a 4X 18.5 Minutes, etc..
On top of the capabilities of the CDRW drive in speed, is the capability of your machine. Your machine has to be fast enough to keep up with the data transfer. So it's best to use the 'auto determine speed' function until you are used to the capabilities of the different methods.
-edit-
CDR and CDRW media are rated for speed (differences in chemical composition mostly), but a drive cannot detect what speed they are capable of. It's up to you to choose the proper media. If you choose 4X rated media and burn at 12X, you are more likely to have data loss.
The software you are using also may not recognize your drive properly, and therefor not give you the full range of speed available for your drive. Therefor it's best to use (up to date)software recommended for your drive.
W.
Apr 17, 2003 06:53 pm OK
This explains everything. I knew I should have come to this board first !
My deal was, was that I was using cheap CD-RW's that were 10x. I 'm not doing CD-RW's anymore because for my purposes I've learned that I don't need them.... And My TDK Machine says its 24x Write ! I am excited. I also have USB 2.0 ! I'm getting a heap of CD-R's on the way home from work right now. Gotta make sure they claim atleast 24x Write. If they are rated higher than 24x for write speed will that be a problem? If I can't find any decent quality 24x's ?
Thanks alot everyone
Apr 17, 2003 06:56 pm If the CDR media is rated higher, then the better off you are. The higher it is rated, the less the chance of data loss, due to higher quality and faster reacting chemical substrates.
W.
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