pill128
The only pioneer SCSI drive shown at the pioneer website is a 6x/32x named DVD-303S SCSI claiming:
Sustained Transfer Rate
2.5X - 6X (3.35MB/sec - 8.1MB/sec) for DVD-ROM
14X - 32X (2.1MB/sec - 4.8MB/sec) for CD-ROM
Pioneer is not showing a 10x SCSI but I found this information for the 10x/40x DVD-304S SCSI at www.goroyalpc.com for $125.00 showing:
DVD
(10X CAV)
Minimum: 5586 KB/second
Maximum: 13500 KB/second
CD-Rom
(40X CAV mode, 16 Kbytes or greater block transfers)
Minimum: 2586 KB/second
Maximum: 6000 KB/second
Lastly the DVD-115 16x/40x (IDE) for $80.00 is claiming:
Sustained Transfer Rate
DVD-ROM ATAPI: 6.6X - 16X (8.91 MB/s - 21.6 MB/s)
CD-ROM ATAPI: 17.2X - 40X (2.58 MB/s - 6.0 MB/s)
Of course I have not purchased and tested all of these drives but from the numbers given 21.6MB/s is clearly better than 8.1MB/s or 13,500KB/s (13.2MB/s). Also something very important is that the 21.6MB/s maximum claimed speed of the 16x is well below the transfer rate of any of the modern interfaces be it 33/66/100MB/s IDE or 40/80/160MB/s SCSI. The interface makes almost no difference. If you are setting up a DVD or HD drive farm with several drives on the same bus then SCSI makes a huge difference but in a normal home system it does not. I know because I have a full SCSI system with an awesome 10,000 rpm IBM ultrastar SCSI HD. No one I knew at the time could tell me if SCSI was worth the extra cost. I even emailed Tom’s asking for advice and complaining that at the time very little if this kind of information was available. Of course now Tom’s has a storage guide and these issues are addressed right here at Tom’s.
I am not claiming that IDE is better than SCSI because SCSI is clearly a better interface. I am also aware that the 16x does not run a full 16x. However IDE is cheaper, and in the case of Pioneer DVD drives actually much faster due to a 16x not being available in SCSI. If you have evidence to the contrary please let me know.