SATA-III "6GBP/s"

[wrenaudrey]

What does it actually mean when a hard drive or a ssd is advertised as '6GBP/s interface'?
But then they also advertise the read and write of this drive.
What's the difference between the Read/Write with Interface?

 

[RetiredChief]

Simple terms - The 6 GB/s for the SATA III (6) port is the Bandwidth Specification for SATA III (6). For devices they are just saying that it is compatable with the port and that the Read/write performance, based on benchmarks, are as stated - Take with a REAL healthy grain of salt.

For Sata III HDDs it is a marketing tool - as Mechanical HDDs do NOT saturate a sata II port. The ONLY benifit of using a SATA III HDD on a SATA III fort is the Short lived Burst speed.
For SSDs, Currently the Sequencial performance will exceed SATA II, but are well under sata III Specs. Sequencial performance is The most OFTEN quoted by manuf (Highest numbers, gee wonder why), BUT are the LEAST important for a OS + Program drive. What are important are the Small file Random 4K performance numbers and again this does not saturate a sata II interface. DO NOT get me wrong, a "Good" sata III SSD will be faster (in real Life) on a sata III port. However here again manuf market will list some Sata III SSD that Perform NO faster on SATA III than when On sata II - can any one say Agility III.

PS I have a pair of 120 gig agility IIIs, (also 3 Curcial m4's and 3 Samsung 830's alonge with about 5 older generation SSDs.

 

[ss202sl]

The interface is the pipe the data flows through. The read/write is what the drive is capable of putting into the pipe.