Difference Between ATA and SATA (With Table)

The information we save is kept on a hard drive. While we’re on the subject of hard disc drives, or HDDs, which are connected to the motherboard through an interface. The interface connection (cable) is known as ATA, a concept developed to improve the quality of data accessing and transferring. It was thought to be the best for a long time until a few flaws caused the developers to doubt its ability, and the SATA was born. Let’s look at the differences between the two.


The main difference between ATA and SATA is that ATA uses a different mode of data transformation than SATA. ATA transfers data parallelly between devices whereas SATA transfers data serially, one after the other. Both ATA and SATA are hard disc drive interfaces that allow stored data to be transformed between devices. Their speed, structure, and other characteristics distinguish them.

The ATA concept was first introduced in 1986. The development of attaching interfaces, combined with the compacting of hard drives, resulted in much faster data transfer. The speed has increased. ATA (Advanced Technology Attachment) was also known as IDE (Integrated Drive Electronics). One of the reasons for the slower rate in comparison to SATA is that the data transformation mode was allowed in parallel.

SATA is an upgraded version of ATA. The SATA was introduced in 2003 to improve data transfer speeds. Furthermore, it differs from ATA in that it transfers data serially, that is, one by one. This speeds up the process. In addition, it is not as wide as ATA and has fewer pins, as will be discussed later.

Comparison Table Between ATA and SATA

Parameters of comparison ATASATA
Known as Advanced Technology AttachmentSerial Advanced Technology Attachment
Speed of data transformation Up to 133 megabits per secondUp to 152 megabits per second
Mode of data transformationParallelly Serially 
Compatibility It’s an old concept, so old that it’s incompatible with today’s computer bus interfaces.A more advanced version of ATA is ideal for next-generation computer bus interfaces.
No of pins 40 pins7 pins (data cable) 

What is ATA?

The main concept behind ATA is to integrate electronic devices by connecting them. As a result, ATA, or Advanced Technology Attachment, is a type of IDE, or Integrated Drive Electronics. The interface’s main purpose is to create a link between the motherboard and the computer’s hardware, allowing data to be transformed. It’s also known as the HDD interface because it allows data from a storage device to be accessed (hard disc). Around 1986, the concept was introduced. Since then, it has been working fine until the development of a new upgraded version of SATA, which increased the speed of the transformation, causing ATA to be replaced.

The ATA data cable has 40 pins, allowing for the connection of 40 wires. Its components are further divided into male and female parts, with the female part attaching to the socket and locking it in place. It has two attachments, allowing for the attachment of two devices, and it is wider. The bands were usually white. It has a data transfer rate of 133 megabits per second and uses parallel signal technology for transformation. In other words, the data is transformed in parallel. This could be the reason for its obsolescence, as it is relatively slow and thus not supported by modern computer bus interfaces.

What is SATA?

In 2003, ATA, also known as PATA (parallel ATA), was phased out in favor of SATA (Serial ATA). The modes of data transformation are represented by parallel and serial. Data can be transferred serially using SATA. It means one after the other, which improves the speed of data transformation. SATA is now supported by the latest generation of computers. We are unlikely to come across a modern computer that has an ATA interface. SATA works in the same way as ATA in that it establishes a connection between the storage device and the motherboard, allowing data to be accessed and transferred.

SATA comes with a seven-pin data cable and a 15-pin power supply cable. Even though SATA has fewer pins, the rate of transformation is faster. Data is transformed at a speed of 152 megabits per second by SATA. Unlike ATA, SATA has a narrower width and can only connect one device. Unlike ATA, SATA is simple to set up. In ATA, we must reboot the system after each installation or it will not support the system, whereas, in SATA, you simply plug in like a pen drive. You do not need to restart the computer because it detects the system on its own.

Main Differences Between ATA and SATA

  1. ATA requires rebooting of the computer every time you attach or detach it whereas SATA detects the system on its own, you need not restart the system.
  2. ATA is also known as PATA or Parallel Advanced Technology Attachment and SATA is Serial Advanced Technology Attachment.
  3. The speed of data transformation of ATA is approximately 133 megabits per second whereas in the case of SATA it is around 152 megabits per second (approx).
  4. The mode of transformation in ATA is parallel whereas in SATA it is serial.
  5. ATA is outdated and hence not compatible with future generation computer bus interfaces whereas SATA is used across all-new generation computer bus interfaces.


ATA, which stands for Advanced Technology Attachment, is a type of IDE, which stands for Integrated Drive Electronics. The main goal of the interface is to establish a connection between the motherboard and the computer’s hardware, allowing data to be transformed. The ATA data cable has 40 pins, allowing 40 wires to be connected.

SATA allows data to be transferred serially. SATA transforms data at a rate of 152 megabits per second. SATA, unlike ATA, has a smaller width and can only connect one device at a time. SATA, unlike ATA, is easy to set up. A seven-pin data cable and a 15-pin power supply cable are included with SATA.

ATA and SATA differ primarily in that ATA uses a different data conversion mode than SATA. ATA transfers data in parallel between devices, whereas SATA transfers data sequentially. Both ATA and SATA are hard drive interfaces that can transfer data from one device to another. Their speed, structure, and other characteristics set them apart.


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