SATA vs. SATA 2

[Rokeneer]

What is the difference between SATA and SATA 2?

Will both work in my 2006 Mac Pro?

 

[Intell]

About 1.5Gbit/sec speed. They will both work in your Mac Pro, but try to get SATA 2 drives, they're faster.

 

[derbothaus]

SATAI = 1.5Gb/s
SATAII = 3.0Gb/s
SATAIII = 6.0Gb/s

A single HDD can't get to 150MB/s sustained yet. SSD's can saturate their respective links.

 

[jmcgeejr]

SATAI = 1.5Gb/s
SATAII = 3.0Gb/s
SATAIII = 6.0Gb/s

A single HDD can't get to 150MB/s sustained yet. SSD's can saturate their respective links.

As stated above.
An ssd can saturate a SATA2 connection and below easily as Sata2 is 3Gbps which is roughly 375MB/s. No single mechanical drive can saturate a single bus right now, nor can I see that changing in the near future.

 

[derbothaus]

As stated above.
An ssd can saturate a SATA2 connection and below easily as Sata2 is 3Gbps which is roughly 375MB/s. No single mechanical drive can saturate a single bus right now, nor can I see that changing in the near future.

And also adding a Sandforce SATAIII SSD can saturate a 6.0Gb single bus. 560MB/s is pretty close to full saturation forgiving any overhead.

 

[jmcgeejr]

And also adding a Sandforce SATAIII SSD can saturate a 6.0Gb single bus. 560MB/s is pretty close to full saturation forgiving any overhead.

I am going to disagree on that one , since sata 3 is 6Gbps which is about 750MB/s, and from reading, the overhead is about 10% at worse so 7MB/s

 

[derbothaus]

I am going to disagree on that one , since sata 3 is 6Gbps which is about 750MB/s, and from reading, the overhead is about 10% at worse so 7MB/s

True man. Can't argue with correct math. But with 10% overhead (worse case) theoretical is maxed at 691MB/s. So we have a good 140MB/s to go