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

The main difference between the two interface types of SATA2 and SATA3 is the different transmission rates. The latest SATA3 transmission rate can reach 6Gb/s, while the transmission rate of the SATA2 interface is 3Gb/s. Theoretically, the SATA3.0 interface is twice as large as SATA2.0.

#The operating environment of this article: windows10 system, thinkpad t480 computer.

Hard drives using the SATA interface are also called serial hard drives. 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 question. Are the two interface types sata2 and sata3 compatible and universal? In fact, sata3 is the next generation upgraded version of sata2. , it is fully compatible downwards, just like the relationship between USB3.0 and USB2.0, the two are compatible with each other.

The difference between hard disk interface types 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. However, in order to allow users to distinguish the SATA 2 and SATA 3 hard disk interface types, many motherboards will be marked with different colors. The SATA 2 interface of most motherboards that support the STA3.0 interface is black, while the SATA3 interface color is yellow/white/blue, etc.

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

2. The transmission rates of the two interface types are different

The main difference between the two interface types of SATA2 and SATA3 is the different transmission rates. The latest SATA3 transmission rate can reach 6Gb/s, while The transmission rate of the SATA2 interface is 3Gb/s. Theoretically, the SATA3.0 interface is twice as large as SATA2.0.

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