> but i thought writing at speeds beyond 20x-24x was practically almost
> impossible.. well it shows 32x,...40x but the hdd speeds are *not* high
> enough to support these speeds .. 150*40=6000Mbps consistent ???
> i thought that was quite difficult to get....
> i mean we do get 16Mbps and so on by hdparm -t ...
> but i never found consistent 6Mbps even for a UDMA -100 HDDs...while doing
> data transfers!! :-(
>
> therefore i guess one should always keep safe, and try a 20x max (or
> lower!!) ...
well.. there are 2 things here:
1. No cd writer writes at true 24x or higher. They use slower speeds to
write to the inner tracks, and use faster speeds for the outside. I won't go
into detail, but there are enough sites out there that will explain this
better than I can.
2. All of the high speed drives have some kind of buffer underrun
protection, so you can get a perfectly usable disc even if you burn it while
your hdd defrags. It takes more time, but the burn doesn't fail.
I don't see how you can say that a 20x drive is the safest speed at which
you can burn. On any new machine with even a 5400rpm hdd you can very easily
burn at 24x. My system still stays responsive and useful when u burn at 24x!
I have used 32x and 40x burners, and they do burn cds quite easily on most
modern machines. The main thing to look for is that most of the cheaper
burners are not very compatible with media. With high speed cdrw drives, it
is very important to have a drive with good media compatiblity, as the
drives lower speed when they can't recognise media properly. This also
applies to media, with high speed drives being less forgiving. I always use
name brand media when burning fast.
Ambar
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