What is the difference between sata2 and sata3 interfaces in the hard disk?

The main difference between SATA2 and SATA3 is the transfer rate. The latest SATA3 transfer rate can reach 6Gb/s, while the transfer rate of SATA2 interface is 3Gb/s. In theory, the SATA3.0 interface is twice that of SATA2.0.



The hard disk using SATA interface is also called serial hard disk. The biggest advantage of SATA is its high transmission rate. Currently, the two mainstream interface types are SATA 2 and SATA 3.

SATA3.0 is also called SATA6Gbps, and SATA2.0 is SATA3Gbps. Many computer novice friends have the same questions about whether the two interface types sata2 and sata3 are compatible and common problems. In fact, sata3 belongs to the next-generation upgraded version of sata2, and is fully compatible below Yes, just like the relationship between USB3.0 and USB2.0, the two are compatible with each other.

The difference between hard disk interface type SATA2 and SATA3

1. The appearance of the two interface types is different.

It can only be seen from the appearance that the SATA3 and SATA2 interfaces on the motherboard are basically the same, but many motherboards are marked with different colors in order to allow users to distinguish the SATA 2 and SATA 3 hard disk interface types. Most motherboards that support STA3.0 interface SATA 2 interface is black, while the color of SATA3 interface is yellow/white/blue.

SATA2 and SATA3 motherboards have basically the same appearance of hard disk interfaces. Many low-end motherboards still use SATA 2 and SATA 3 dual-interface hybrid modes, such as AMD platform A75, Intel platform B75, H81, B85 motherboards are SATA 2 and SATA 3. Dual-interface hybrid mode, and some mid-to-high-end motherboards, such as A88, H87, Z87 and other motherboards, all have SATA3.0 interfaces.

2. The transfer rate of the

two interface types is different. The main difference between the two interface types SATA2 and SATA3 is the transfer rate. The latest SATA3 transfer rate can reach 6Gb/s, while the transfer rate of the SATA2 interface is 3Gb/s. In theory, the SATA3.0 interface is twice that of SATA2.0.