Table of contents:
- What is the difference between SATA I, SATA II and SATA III?
- How fast is an SSD on SATA I, II and III?
- And what is "SATA Express"?
Video: The Difference Between SATA I, SATA II And SATA III - Simply Explained
2023 Author: Sheila Hailey | [email protected]. Last modified: 2023-08-25 04:29
The abbreviation " SATA " stands for " S erial A dvanced T echnology A ttachment" (extended serial technology connection). SATA is a technique for transferring data from SSDs and hard drives to certain mainboard components and vice versa. In the past, there were parallel interfaces, which were later converted to serial. Serial means that data is transmitted bit by bit in succession.
Mainboard connections explained
What is the difference between SATA I, SATA II and SATA III?
The various SATA levels indicate the maximum speed with which the data can be transferred. The higher the level, the faster data in the computer is transferred to SSDs or hard drives.
|SATA I||SATA II||SATA III|
|Year of launch||2002||2005||2009|
|Max. speed||1.5 Gbit / s||3 Gbit / s||6 Gbit / s|
|Max. Bandwidth throughput||150 MB / s||300 MB / s||600 MB / s|
For comparison, a hard disk transfers in theory a maximum of 120 MB / s, more practically about 80 MB / s. So that's about half the specified SATA-I speed. This does not change if you operate the hard drive with the SATA I, SATA II or SATA III interface. An old-fashioned hard drive cannot transfer data faster for technical reasons. For this reason, SSDs were invented that can fully exploit the SATA interface.
Start photo gallery (12 photos)
How fast is an SSD on SATA I, II and III?
The following guidelines apply to sequential read and write speeds. So large files are written or read in one piece:
- With SATA III, an SSD achieves around 500 MB / s in reading and writing in practice.
- With SATA II, an SSD achieves around 280 MB / s in reading and writing in practice.
- With SATA I, an SSD achieves around 120 MB / s in reading and writing in practice.
If no other components in the computer slow down the speed, even an SSD with SATA I is faster than a hard drive (on SATA III, II or I). The following YouTube video of the channel "T Driver" shows the difference between an SSD and a hard drive with SATA I when booting Windows:
An SSD with SATA I is always worthwhile compared to a conventional hard drive if speed is important. Depending on the computer system, it can happen that you don't notice a big difference between an SSD with SATA I and a hard drive. From SATA II, however, you notice a significant increase in speed.
As a large data archive, hard drives are still one of the best storage media, since their prices are cheaper per gigabyte and data from defective hard drives can be better recovered than data from defective SSDs.
And what is "SATA Express"?
"SATA Express " was introduced in 2013 and is referred to as the SATA 3.2 interface, making it even faster than SATA 3 / SATA III. "SATA Express" transfers at 8 Gbit / s per PCI Express lane (PCIe lane). A maximum of 2 PCIe 3.0 lanes are supported, resulting in a maximum transmission speed of 16 Gbit / s.
Since the M.2 interface even supports up to 4 PCIe lanes and today's drives require higher bandwidths for maximum performance, M.2 has become already increasingly established in modern desktop PCs and laptops.
Is the article helpful?
Yes No Comment
Your life is GIGA.
Help us to improve and please tell us:
Why is the article not helpful for you?
The information is out of date I have not received enough information The information is incorrect I disagree Other Send answer
Thank you, your GIGA team
Your opinion is important to us. Also like to discuss with us in the comments.
Window will close automatically in 6 seconds
With the Pixel 4 and Pixel 4 XL, Google has introduced two Android 10 smartphones that are very similar optically and technically. But where are
For a few years now, Instagram has not only been able to post photos in its own chronicle. For pictures that can only be seen briefly
At internet or WLAN speeds, one often sees the term "MBit / s". But what does that mean and how fast is this information
The term mixed reality means " mixed reality " and was especially shaped by Microsoft in connection with Windows 10
Will 5G broadcast in the " mmWave " spectrum, thereby allowing extremely fast mobile internet? What " mmWave “ is and