Asked by: Samera Guzie
technology and computing computer peripherals

What is the difference between SATA II and III?

Last Updated: 15th June, 2020

SATA II specifications provide backwardcompatibility to function on SATA I ports. SATA IIIspecifications provide backward compatibility to function onSATA I and SATA II ports. However, the maximum speedof the drive will be slower due to the lower speedlimitations of the port.

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Similarly one may ask, what is SATA III?

SATA III doubles the maximum data transfer ratefor previous Serial ATA storage interface specifications from3 to 6 Gigabits per second (6 Gb/s), enabling faster datatransfer speeds between storage units, hard drives, solid statedisk drives, optical drives and protocol host bus adapters(HBAs).

One may also ask, is eSATA as fast as SATA? eSATA cables are not the same as SATA Icables, they are shielded and have a different connector than the Lshaped design of internal SATA I connectors. TheeSATA port on the GT 050Q supports speeds up to 1.5 Gb/sec(150 MB/sec), much faster than FireWire 400 or FireWire800.

Considering this, can I use a SATA 3 SSD on a sata2 motherboard?

If you are running an intel chipset motherboardand using its SATA III ports, yes by all means. Inall other cases no. Real world performance, no.

What are SATA speeds?

SATA II, also known as SATA 3Gb/s, is thesecond generation. This SATA version runs at 3Gb/s, with abandwidth throughput of 300MB/s. The most recent generationof SATA is SATA III, or SATA 6Gb/s.SATA III's interface runs at 6Gb/s, and the bandwidththroughput is 600MB/s.

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