Difference between IDE and SATA.

When a computer system upgrade is planned, interface confusion can make the choice of components very difficult. So, motherboards may not have an IDE interface, while a hard disk or optical drive is connected through it. Or a new SATA drive cannot be installed on a system with IDE ports.

Definition

IDE - the marketing name for Parallel Interface (PATA), used to connect internal hard drives, optical drives, and other types of storage devices to motherboards.

SATA is a serial data interface used to connect both external (eSATA) and internal storage and optical drives.

Comparison

The difference between IDE and SATA is primarily temporary. The IDE interface today is a rare guest on motherboards and drives, and its use is justified mainly only for the purpose of upgrading with little blood. However, in the case of optical drives, replacing IDE with SATA will not give virtually any gain, and the read / write speed of hard drives is far from what SATA can provide. But IDE will soon disappear altogether, so it is still worth taking care of the transition to SATA. Today, SATA drives are cheaper than IDE drives and offer more storage.

SATA in any of the versions has a higher data transfer rate (maximum IDE in theory is 133 Mb / s, minimum SATA is 150 Mb / s), and the bandwidth of the PATA (IDE) bus in the latest version is about 1064 Mbps versus 1500 Mbps SATA in the first version and 6000 Mbps in the third.

The cable for the IDE connection is a wide flat tape with 80 cores (previously there were 40), the IDE interface pins are invariably 40. The SATA cable is narrow, and there are only 7 pins. One IDE cable can be connected to the motherboard has two devices, one of which will be the master; only one hangs on the SATA cable. Due to their shape, IDE cables often cause incorrect air circulation inside the case and interfere with the installation of components.

Left - SATA. On the right - IDE

Power supply of devices connected via IDE is carried out via a four-pin molex connector, SATA devices are powered either from a 15-pin connector, or from the same molex. There are adapters that allow you not to worry about connecting any device with any interface to the power supply. Also, in the latest version of SATA, it is possible to replace the device without completely disconnecting the computer, while IDE must be turned off with the correct sequence of actions.

Conclusions TheDifference.ru

  1. SATA - serial interface, IDE - parallel.
  2. SATA transmission speed and bandwidth are higher.
  3. SATA cable is more compact than IDE ribbon cable.
  4. Two devices can be connected to an IDE cable, only one to SATA.
  5. IDE devices are powered via molex, SATA devices via 15-pin connector or molex.
  6. SATA devices are cheaper today than IDE devices and are much more common.
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