Will DVD writers ever reach 52X??????

[orbital517]

What do you guys think? Do you think it will be possible to have DVD speeds that high and possibly burn a full DVD within 3-5 minutes? I'm wondering how long it will take or if it will ever even come out. If you look at just normal DVD roms that have been out for quite some time now......the highest speed I believe is only 16X compared to 50X-60X (I think) CD rom drives. Is there a limit to how fast DVD drives can be? Post your opinions or if you have any more facts or info on this subject.

[philly33flyers]

well first of all...i believe 2x in terms of dvd speed is about the equivalent of 18x in cd speed. so more than likely 16x on a dvd is it's max speed if you compare it to what it's equivalent would be in terms of cd speed.

[chemist]

Hard drive speeds will limit the speed of writing. To write from a hard drive to a DVD in 3 minutes would require hard drive transfer rates of greater than 20 Megs/second. That's fast. Much too fast for common PC hard drives today. At 2X speed you have to pull data at about 2.5 Megs/second. At the current hard drive speeds I think 4X (i.e., 15 minutes to write a full disk) is the tops we'll see.

[flaninacupboard]

Orbital,
i'm sure you read the forum rules before signing up. always do a search before you post, this topic has been covered before.

[Bob W]

Orbital,
i'm sure you read the forum rules before signing up. always do a search before you post, this topic has been covered before.

Every topic has been covered before.

[orbital517]

Orbital,
i'm sure you read the forum rules before signing up. always do a search before you post, this topic has been covered before.

Every topic has been covered before.

Thank you Bob. I'm just trying to liven up these boards with some questions.

[LanEvo7]

CDRs haven't even reached a "true" 52x yet. Cdr only burn at 52x when it reaches near the end. Its doesn't burn at 52x all the time. Thats why there is little to no difference between the times of a 32x and a 52x cdr.

[Jester700]

Hard drive speeds will limit the speed of writing. To write from a hard drive to a DVD in 3 minutes would require hard drive transfer rates of greater than 20 Megs/second. That's fast. Much too fast for common PC hard drives today. At 2X speed you have to pull data at about 2.5 Megs/second. At the current hard drive speeds I think 4X (i.e., 15 minutes to write a full disk) is the tops we'll see.

Actually, new 7200RPM IDE drives have no problem at that speed. Many can double it. The real issue is the ability of the DVD itself to withstand th high RPMs. This will top out at around 16x (somewhere around 9-10,000 RPM) - just as it already has for readers.

[Greg12]

i doubt it because u have to remember X equals a different number for DVD's than it does for CD's.

[Yorel]

72X CD ROM's were released some time ago, then quickly pulled, as the cd's were detonating at that speed, and from what I heard, a few people were injured. The same would hold for DVD's. You reach a speed where the DVD won't hold together due to the centrifugal force applied at that speed.

[Felix_2000]

Also is that speed really needed when in many cases it takes you upwards of 30min - 1hr or much more for custom work to copy re-encode/transcode before you even get to burning? So unless your making several copies of something you already have on your drive it probably won't really save people much time either.

Also like Yorel said cd/dvd tend to shatter under the centrifugal force. Small flaws and cracks in disc would rip it up. Though they might be able to pull something like this off with multiple write lasers or something but that probably will never happen for the current dvd writers.

-=[ Felix ]=-

[Hardcoreruss]

I remember a friend used to have a ps1 with a faulty drawer. It spun the disc far too fast and as you could open the drawer while it was still spinning it was ninja frisbee time !!!!

Lethal when we were pissed

Anyway sorry that was a bit of topic

I agree that dvd's will top out at around the 16 - 24 mark

[vitualis]

72X CD ROM's were released some time ago, then quickly pulled, as the cd's were detonating at that speed, and from what I heard, a few people were injured

Actually, this is an urban myth.

The Kenwood drives used three reading lasers at once (or something like that) so the physical spin speed is actually lower than the modern 50x spin readers.

There have been reports of discs exploding at 50x CD spin though so it is unlikely that physical spin speeds for CDs will get much higher.

Now, DVD spin rates are quite different from CD spin rates. At 1x DVD spin is approximately equivalent to 3x CD.

Thus, in terms of rotation rate, a 16x DVD drive is actually about that of a 50x CD drive.

A 16x DVD drive spins the disc actually very quickly... The number is just smaller than the equivalent CD spin rate.

Regards.

[thxkid]

actually went out and did some searches on this topice and its a 1 to 9 breakdown 1x DVD is about 9x CD, this according to CDspeed.

[-jsl-]

actually went out and did some searches on this topice and its a 1 to 9 breakdown 1x DVD is about 9x CD, this according to CDspeed.

Yes 1x DVD (~1350 kBps) is equal to 9x CD (9x 150 kBps) when you compare transfer rates but when you compare how fast the media rotates a 1x DVD spins about as fast as a CD in 3x as Vitualis wrote.
BTW the 72x Kenwood drive read the media with 7 laser beams if I remember correct.

[orbital517]

I also think that DVD burn speed will only reach about 16X-24X max write speed. I'm actually pretty happy with the current 4X because it only takes about 15-18 minutes tops, which is not too long, but once 8 or 12X speeds come out, we should see about 8-10 minute (maybe less) DVDs.