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View Full Version : SATA or SCSI


capmuffin
02-22-04, 10:11 PM
hey ima get som new hd(S) to replace my curret WD80 8bmcache....my dad said he can get that UW2 scsi card for 30(one in purple box dunno what it called)or my AN7 has onbo Sata which would be faster

capmuffin
02-22-04, 10:13 PM
and got any HD reccomendations

FireMogle
02-22-04, 10:31 PM
SATA has more bandwith that U2W, so I would say go with sata.

Albuquerque
02-23-04, 10:29 AM
Originally posted by FireMogle
SATA has more bandwith that U2W, so I would say go with sata.
Incorrect.

SCSI UltraWide 2 low-voltage differential cards are able to sustain 160mb/sec of bandwidth; higher than even your vaunted SATA. They also support command queing which SATA does not in it's current version.

However, do you actually NEED the performance that SCSI can provide? Sure it is faster, but the drives are more expensive and put off just as much (if not more) heat. For ultra-performance, SCSI is your only answer. But for fast performance at home, SATA is just as viable.

That, and a SCSI Ultrawide card has the ability to saturate your PCI bus long before it saturates it's own transmission speeds. Your PCI bus can only transmit a theoretical maximum of 133mb/sec; the SCSI bus (with a pair of expensive, or a trio of less expensive disks) is more than capable of completely swamping that 133mb/sec capacity.

There are individual SCSI drives capable of constant-streaming data upwards of 80mb/sec... They are insanely fast, but obviously at a cost.