- Jan 25, 2005
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I was reading a manual and it said that SATAII can do 3Gb/s. Is that a typo or correct? I thought SATAII was 300Mb/s.
Originally posted by: Duvie
I thought it was 300mb/s as well since SATA (the original) is only 150mb/s...
OH I see...It is 300 mebabytes per second versus MustISO saying Gigabits...same thing then....
Edit: to clarifify I meant 300megabytes would be 3000megabits and thus 3 gigabits, but only .3 gigabytes....
sounds like marketing ploys!!! We all know it likely wont deliver sustained throughput much over 100megabytes or .1 gigabits anyways...look at SATA I for the example
Originally posted by: Pariah
Originally posted by: Duvie
I thought it was 300mb/s as well since SATA (the original) is only 150mb/s...
OH I see...It is 300 mebabytes per second versus MustISO saying Gigabits...same thing then....
Edit: to clarifify I meant 300megabytes would be 3000megabits and thus 3 gigabits, but only .3 gigabytes....
sounds like marketing ploys!!! We all know it likely wont deliver sustained throughput much over 100megabytes or .1 gigabits anyways...look at SATA I for the example
SATA II is capable of 3Gbps for the interface which equals 375MB/s. 20% of the bandwidth is reserved for CRC and command overhead. This leaves 300MB/s (2.4Gbps) available data bandwidth, which is why you see both 3Gbps and 300MB/s quoted for SATA II even though they aren't the same transfer rate.
And as always, this needs the disclaimer that 300MB/s is the bandwidth available to drives through the interface, it is NOT the actual transfer rate of SATA II drives which right now is around 60-65MB/s max.
For some reason basically all serial transfers (fibre channel, USB, networks, firewire, SATA, SAS, etc..) are given in bits/sec rather than bytes/sec. It's been this way for basically ever so it could be considered more habit than marketing.