- 7200 RPM 64MB Cache
- SATA 6.0Gb/s
- 3 years limited
Rich Z - "speed" vs "bandwidth" 08/20/2011
This is a message to Rich Z, who complains that he's not getting any more "speed" from a Sata III connection vs a Sata II connection.
Although there are Sata III SSD drives that can outrun the bandwidth of a Sata II data channel, there isn't a conventional Rotating/Mechanical hard drive in the world that can do the same. Max theoretical bandwidth from a Sata II channel is 3Gbps - a little over 300MBps, but the fastest mechanical hard drive in the world isn't half that fast. So then, you may ask, why do manufacturers make Sata III hard drives? Because high-end HD controller cards use SAS to Sata fan-out cables that convert one SAS connection to 4 Sata connections. Under that scenario, 4 fast Sata II hard drives will experience a bottleneck. Hence, to get faster data transfers, you have to increase the bandwidth of the Sata channel. Thus, Sata III allows you to gang 4 drives together and still have excess bandwidth left over on the data channel.
You should really delete your review so as not to confuse other people who don't understand the difference between the "speed" of the data channel vs the "speed" of the device attached *to* the data channel.
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