[filmscanners] Re: OT: DVD formats

["Brentley Beerline" <yeltnerb@pacbell.net>]

While it is true that DVD speeds are expressed
differently, it is important to note that for burning
CD media they never burn at the same speed as DVD.  If
you just want to burn CDs a dedicated CD burner will
always be faster than a DVD.

Also 8x DVD is coming out soon (along with combo
drives that do plus minus recording).  I have on my
desk right now a Plextor 8x burner, does plus and
minus media, along with burns CD at 42x.  A full DVD
burn takes about 8 minutes compared to the 16 minutes
the 4x one takes.

Problem is that 8x media will not be widely available
until early next year.

The Sony 4x plus minus drive is down to 239 here in
Silicon Valley after rebates and is a good deal.  The
plextor will be 299 when it ships.

Brentley


---  <rkoziol3@comcast.net> wrote:
> Hi,
>
> On 2 Sep 2003 at 13:44, Lucans, Gunars wrote:
>
> > Note that 2.4x for DVD is not the same as 2.4x for
> CD-R and is quite a
> > bit faster (although I can't find a reference just
> now, it's more on
> > the order of 30x for cd-r).
>
> This topic is coming up lately.  Could be the price
> breaks, so people
> are thinking about it.  So am I.  Here's something I
> lifted from
> another list.
>
> "The difference between CDR speeds and DVD speeds is
> for CDR
> speeds each 1x = 150KB sec for DVDs each 1x = 1353KB
> sec.
>
> So 4x would be for CDs (4X150 = 600KB sec) and 4x
> for DVDs
> (4x1353 = 5,412KB sec or 5.4MBps)
>
> So recording DVD is much faster than CDR recording
> since DVD
> drives have a higher storage capacity of 4.7 GB
> single-sided as
> opposed to CDR 600 - 800MB single-sided and need a
> much higher
> bandwidth for packet writing."

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