Its actual uncoded transfer rate is 1.2 Gbit/s (150 MB/s), and it supports the communication rates of up to 1.5 Gbit/s.
SATA 1, also known as SATA 1.5 Gbit/s, is the first generation of SATA interfaces and was released in 2003. Since 2003, it has experienced 3 major revisions and each revision has made a great breakthrough in the SATA data transfer rate. To meet various and changing user demands, SATA has been revised and updated for several times. How much do you know about SATA speed or SATA data transfer rate? Just keep reading to get further explanations. More importantly, it provides faster data transfer rate through higher signaling rates, which is a critical factor to consider for both users and manufacturers. On the other hand, SATA is designed with a flexible port which enables users to connect to various device with ease. On the one hand, SATA requires less cable size and cost than PATA interface, with only seven conductors instead of 40 or 80. Why does SATA interface enjoy such a high popularity in our society? Nowadays, it has become the standard and predominant interface for our storage devices, replacing the earlier PATA (Parallel AT Attachment) interface. Since its introduction in 2000, SATA has been widely used in modern technology and employed in various desktop and laptop computers. It is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives (HDDs), optical drives (CD/DVD), and solid-state drives (SSDs), according to Wikipedia.