Delkin Blog

What You Need to Know about SATA Data Transfer Rate

 

SATA is one of the most widely used interfaces in modern technology. It’s virtually impossible to have used a desktop or laptop computer over the past decade that did not have a piece of SATA hardware inside. When it comes to both solid state drives (SSDs) and hard disk drives (HDDs), SATA interfaces are often a critical component, and the SATA data transfer rate is an important factor to consider. SATA interfaces are common in both commercial and industrial grade products, in part thanks to their data transfer rates.

 

There are other reasons for the popularity of SATA interfaces as well. SATA features a flexible port, so it is easy to connect to a variety of device designs. SATA has also been updated frequently to keep up with changing technology and demands. However, SATA data transfer rate is a key concern for many engineers and OEMs. Here is a closer look at data transfer rates of SATA interfaces across the different generations of products. Keep in mind that these rates are primarily of concern to SSD users. The rates matter less to HDD users, since the upper limits are unlikely to be reached.

 

SATA Data Transfer Rate

The SATA I interface, which was previously known as SATA 1.5Gb/s, is the first generation of SATA design. The interface itself runs at 1.5Gb, while the bandwidth throughput is 150MB/s.

 

SATA II, also known as SATA 3Gb/s, is the second generation. This SATA version runs at 3Gb/s, with a bandwidth throughput of 300MB/s.

 

The most recent generation of SATA is SATA III, or SATA 6Gb/s. SATA III’s interface runs at 6Gb/s, and the bandwidth throughput is 600MB/s.

 

Each version of SATA provides backwards compatibility to the versions before it. However, when relying on backwards compatibility, the data transfer rate may be slower than expected because of power issues and the limitations on the speed of the port itself.

 

Gb versus GB

One important distinction to note when looking at data transfer rates is the difference between Gb and GB. Gb, which is the transfer rate that is noted by SATA, refers to gigabits, not gigabytes. Eight gigabits make up one gigabyte. Many people make the mistake of assuming gigabits and gigabytes are the same thing, which causes confusion when they are considering data transfer rates for SATA interfaces.

 

The product team at Delkin is available to answer questions about SATA interfaces and choosing the right fit for your needs. Contact us today to find out more.

 

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