How fast does your cdrw burn?

[RIGorous1]

I burn a cd at 12x with my old tdk velocd and it takes only 7 mins. and that's a 700MB disc...

The theoretical yield is 12x150kb = (1800kb/s)

(700MB * 1024kb) = 716800kb/ 1800kb/s = 398 seconds ~ 6 min 30 sec Which is on the money with my burner so,

if 48x150kb/s = 7200kb/s

Then 700MB * 1024kb = 716800kb/7200kb/s = 99.5 seconds! ~ 1 min 39 secs?

is this true? I know that the theoretical but does anyone ever get this?

Cause I know alot of people that can't burn with a 40x to get under 3 mins. Is there something wrong with my calculations or is it the IDE interface that messes up the theoretical yield? If its the IDE interface probably SCSI or USB 2.0 burners can acheive the theoretical yeilds right?

 

[Submit]

RIGorous1

Only the very, very middle of the cd gets up to 48x. In other words the cd burner starts of much slower, then gets up to it's max speed, then slows back down again. Therefore there isn't a big difference (like twice as fast) between a 24x burner and a 48x burner.

For more details so a quick search.

 

[KF]

Over about 24x, CDRWs use constant rotation (Constant Angular Velocity) instead of constant linear velocity. The 48x speed is on a few tracks only, the outer I believe. It is a maximum speed. Seldom do people burn all the way to the maximum track, which would be a CD with no unused space. The inner tracks are much slower. There is also a lead-in, a lead-out and a TOC that add time. The net result is that the time doesn't decrease much in percentage over about 32x speed. In addition, the writers commonly autospeed to a speed that will actually burn correctly. That's a good idea, but you need good quality blanks to get the speed you think you should get.

 

[Ben50]

Actually a burner starts in the middle at the slowest burning speed and works its way up to the highest speed on the outermost edge of a cd. Basically every cd burner over 16x will do this in order to prevent a cd from shattering due to excessive rpms.

 

[Wolfsraider]

i can burn a cd in my liteon 40x (flashed to a 48x) in 2:10 minutes but on my 1.5 and with a ide hdd it was 3:10 <shrugs> still love it better than the 8x4x32 it replaced that wouldn't copy any cd's except music

 

[Paulson]

24x lite on does it in 4:12 (a full 700 meg cd)

 

[YOyoYOhowsDAjello]

LITE-ON 40x burns a 702mb disk in about 3:10 to 3:15

 

[Supradude]

Sony 40X 700MB->~3min 20s

 

[wizdum]

Ya you are the percentage of a difference you are getting decreases as you ascend to a higher writing speed.

 

[wizdum]

Ya you are the percentage of a difference you are getting decreases as you ascend to a higher writing speed.

That made no sense.

Ya the percentage of difference you are getting decreases as you ascend to a higher writing speed.

That's better.

 

[m1ke101]

my 48x liteon burns a 700 meg iso in 2:55 to 3:10...dunno why it varies sometimes, but i'm happy with the speed. backed up all my family guy episodes on 17 cds in less than an hour

 

[glugglug]

I can burn a full CD without finalizing/writing TOC in about 1:50, but writing the TOC brings it well over the 2 minute mark. Why do drives still slow down for the TOC which is on the outer edge of the used area of the disc?

 

[StattlichPassat]

Plexwriter 16x- I dunno, it gets the job done reliably without fail everytime! I could care less about numbers.

 

[Carrot44]

My vote is with NightFlyerGTI
My Teac 6x24 scsi works great every time. So what if I have to wait hours

Ken

 

[Booter]

Quick question. I got a couple of 900mb cds (99min) Is it possible to burn 900mb data cds with nero? Has anyone succeded with that?

Thanks.

 

[billandopus]

Originally posted by: Booter
Quick question. I got a couple of 900mb cds (99min) Is it possible to burn 900mb data cds with nero? Has anyone succeded with that?

Thanks.

I think that Nero may support it but for sure you will have to have a burner that supports 99min burning ... of which i'm assuming that you have if you want to do such a thing? The last burner that was capable of doing that was a Mitsumi although i'm sure that there are couple more out there that can do it.

 

[arcenite]

Yamaha CRW3200E (24x10x40x) Does a full 700mb cd in a little over 4 minutes

 

[Macro2]

The lead in - lead out- time kind of neutralizes the whole speed thing so the latest and greatest burners are not needed, IMHO. Fastest burner I have is a 32x and if the files are small I'll kick it down to 16x or 8x just to ensure a good burn. Probably not needed but the time difference is negledgable so why not.