Disc-to-Disc Faster at 2.4x than at 16x???

[wendelgee2]

Hi.
long-time listener, first-time caller

I just got a nifty new BenQ DQ60 so I'm all excited to do some 16x disc to disc copying. I also have a TEAC DVW58GA02.

so...last night I did these two things:

-copied DVD using 1-yr old Nero (6.1 I think) OEM disc-to-disc at 2.4x
Elapsed time 20 minutes

-Then, I updated to the new 6.6 Nero OEM bundled with the Benq (figured I needed to upgrade in order to burn 16x, since it wasn't coming up as an option on the older version) copied disc-to-disc at 16x
Elapsed time 52 minutes.

soooo.
Any guesses as to why it would take almost 3x as long to burn it at 16x than at 2.4x??

TEAC is source drive, BenQ is burning, DMA enabled on both.

My hairbrained theory is that it's because the burning rom is the master and the reading rom is the slave...so the priority is given to demanding data rather than supplying data...but that's just a wild guess and I really would rather not fiddle with the master/slave thing unless I have to.

what do you think?

I have XP Professional
AMD Athlon 3400+
1 gig ram

[Scour]

-Then, I updated to the new 6.6 Nero OEM bundled with the Benq (figured I needed to upgrade in order to burn 16x, since it wasn't coming up as an option on the older version) copied disc-to-disc at 16x
Elapsed time 52 minutes.

Welcome to Cdrlabs

If you want to make a direct-copy (On the fly) you have to install the drives on different IDE-cables, because on one cable it´s impossible for the IDE-bus to manage high speeds.

The Teac is also a slow reader, it reads burned DVD R/RW only from 3,5x to 9x

[TCAS]

Having both drive in one IDE Controller would not prevent "On Fly" copying. I have this configuration and I have had "On Fly" copying from one disc to another without any anticipated proble at all.

[wendelgee2]

Well.
I'll try putting them on different IDE channels and report back.

I've watched dvd+r's on 32x speed using the Teac. Is "watching speed" not related to "data transfer speed"?
In that case, maybe the fastest on-the-fly recording I could do is 8x because that's more or less the top speed of the source drive?

[Scour]

In that case, maybe the fastest on-the-fly recording I could do is 8x because that's more or less the top speed of the source drive?

Nah, not really.

Most 16x-writers start at 6x and shift to 8x before reaches 1GB-mark. And your Teac reaches 8x much later, maybe at the 4GB-mark.

You can test your speed with Nero Cdspeed www.cdspeed2000.com

[wendelgee2]

Well.
My IDE cables aren't nearly long enough to put them in any configuration other than what they are in now.

but, seeing as how the TEAC can't really supply the data much faster than 4x anyway, I tried on-the-fly at 4x. It took 10 minutes.
That's good enough for me.

thanks scour for setting me straight on the drive speed.