CD-R drive burning time question

[Joyride]

How much of a time difference is there between an 16x drive and a 24x, 32x, and 40x drives?

Please provide some documentation if possible.

Thanks

 

[RalfHutter]

^^^Bump^^^ because I'd like to know also!

 

[murphy55d]

cdrinfo.com

 

[Mavrick007]

There are slight differences between makes and models as well as the speeds. Conventionally the faster drives now do not start up at the max speed, but slowly "speed up" to the max after certain time in the burning cycle. ie. a 32x drive may start at 16x, go to 20x, then 24x and finally finish off at 32x close to the end of the cycle.

Therefore, it's best to look at average burning speed cause this way you can calculate the "theoretical" burn time from this. Ie. An average 24spin x 150K/s = 3600K/s and a 650Meg full cd on average should take approx. 3mins 5secs, but this can be higher or lower depending on data involved as well.

A 40x burner will not reach 40x til close to the end of the burn cycle and therefore you will get an average burn of about 28-29x hopefully, whereas it's more close to 24x for the 32x burners. There are many different factors involved and this does not slow down the writing of the index at the end which adds time in addition to the burn.

 

[Pauli]

Yeah, what Mavrick said, but there really is an easy way to approximate it.

Assuming you're using 80 minute blank CDRs - of course 80 minutes is 1X playing time - 80 minutes of playing time is equal to burning at 1X (a little longer actually because of writing lead-in and TOC takes a little bit of time).

So, in theory, we have these numbers:
burning at 2X = 40 minutes
burning at 4X = 20 minutes
burning at 8X = 10 minutes
burning at 16X = 5 minutes
burning at 20X = 4 minutes
burning at 24X = 3 minutes 20 seconds
burning at 32X = 2 minutes 30 seconds
burning at 40X = 2 minutes

Now as Mavrick said, higher speed burners (above 20X) won't get constant speeds all the way through the burn, so a 40X will really burn an 80 minute CD in about 3 minutes. The TOC an Lead-in also take some time so figure on adding 10-40 seconds on each of the above numbers, depending on burner.

So, really, once you're at 16X, you're really only talking about a couple of minutes slower than the fastest 40X. Not really worth it to me for all that extra noise of the faster burner. If you burn an incredible number of CDs, then I guess it may be worth it. I am sticking with 16X Lite-on for awhile.

 

[Joyride]

<< Yeah, what Mavrick said, but there really is an easy way to approximate it.

Assuming you're using 80 minute blank CDRs - of course 80 minutes is 1X playing time - 80 minutes of playing time is equal to burning at 1X (a little longer actually because of writing lead-in and TOC takes a little bit of time).

So, in theory, we have these numbers:
burning at 2X = 40 minutes
burning at 4X = 20 minutes
burning at 8X = 10 minutes
burning at 16X = 5 minutes
burning at 20X = 4 minutes
burning at 24X = 3 minutes 20 seconds
burning at 32X = 2 minutes 30 seconds
burning at 40X = 2 minutes

Now as Mavrick said, higher speed burners (above 20X) won't get constant speeds all the way through the burn, so a 40X will really burn an 80 minute CD in about 3 minutes. The TOC an Lead-in also take some time so figure on adding 10-40 seconds on each of the above numbers, depending on burner.

So, really, once you're at 16X, you're really only talking about a couple of minutes slower than the fastest 40X. Not really worth it to me for all that extra noise of the faster burner. If you burn an incredible number of CDs, then I guess it may be worth it. I am sticking with 16X Lite-on for awhile. >>




Exactly what I wanted to see. I have a 16x TEAC that I love right now. I will upgrade when the 40x or 32x drops below $100 (or find a smoking deal)

 

[ripthesystem]

yeah...

I'll confirm Pauli's findings too. They are pretty accurate. Granted there are variations with everything but this is a pretty good guide as far as times go. My personal opinion would be that 16X is crazy fast..

if you try to go faster then you really are talking about 1-3 minutes.. who can't wait that long for a CD?

give me convenience or give me death
ripthesystem

 

[RalfHutter]

I guess I'll clarify my "bump". What I actually want to know is what is the difference in time between 1x,2,4,8,12,16,24,32,40x burns INCLUDING the fact that the "over 16x burners" don't actually burn at thier published speed until somewhere near the last 1/3 of the disk.

In other words, I know that a 24x burner won't actually burn twice as fast as a 12x burner ( I've read that it averages around 20x for a full 650Mb burn) but I'd like to know the actual burning times.

Can anybody help with this?

 

[Joyride]

<< I guess I'll clarify my "bump". What I actually want to know is what is the difference in time between 1x,2,4,8,12,16,24,32,40x burns INCLUDING the fact that the "over 16x burners" don't actually burn at thier published speed until somewhere near the last 1/3 of the disk.

In other words, I know that a 24x burner won't actually burn twice as fast as a 12x burner ( I've read that it averages around 20x for a full 650Mb burn) but I'd like to know the actual burning times.

Can anybody help with this? >>



I don't know much on speeds but I know that a 2x took 40-50 minutes to burn when I had one and I noticed the difference from 10-16x was about 5 minutes (I think)

 

[robg1701]

<< So, in theory, we have these numbers:
burning at 2X = 40 minutes
burning at 4X = 20 minutes
burning at 8X = 10 minutes
burning at 16X = 5 minutes
burning at 20X = 4 minutes
burning at 24X = 3 minutes 20 seconds
burning at 32X = 2 minutes 30 seconds
burning at 40X = 2 minutes >>





Real World:

burning at 8X = 10 minutes XX seconds
burning at 16X = 5 minutes XX seconds
burning at 24X = 4 minutes
burning at 32X = 3 minutes 40 seconds
burning at 40X = 3 minutes 20 seconds