As is known to all, SSD (SSD) with HHD (hard disk), compared with reading and writing speed faster, smaller volume, no noise, etc. In general, the performance of the SSD is better than that of HHD.

Many computer users want to replace the old with the new SSD HHD. But the SSD interface type will affect its performance. Some users noticed it, but they do not know the interface type can affect performance, and they don't know the specific difference between them.

So, SATA SSD and m. 2 SSD what's the difference? Moreover, NVME SSD with what is the difference between them?

SATA SSD

What is a SATA SSD? SATA SSD is a SATA (serial advanced technology attachment) interface of SSD. So far, a total of three versions SATA interface. The popular version of the game is SATA Revision 3.0 (so-called SATA 6 GBPS), by the serial ATA international organization (SATA -io) released in 2009.

SATA Interface mainly use the AHCI (Advanced Host Controller Interface) protocol. SATA 6 GBPS throughput (Transfer Rate) a value of 6 Gb/s, the theory of data Transfer Rate of 600 MB/s.

M. 2 SSD

M. 2 SSD is a m. 2 interface SSD. M. 2 (NGFF), also known as the next generation of dimension is for a new generation super this customized interface standard, to replace the mSATA interface. Compared with the mSATA SSD, m. 2 SSD has the advantages of smaller volume, transmission performance is better.

M. interface can be divided into 2 B - the key (Socket (2) and M - the key (Socket 3) two kinds. B - the key interface can support SATA bus and PCI - E 3.0 X2 bus standards, can support the AHCI agreement or NVMe.

M - key interface support PCI - E only 3.0 X4 bus standard and NVMe protocol. Theory of reading and writing speed of up to 4 gb/s.

In addition, m. 2 interface has three popular module specification. They are respectively 2242, 2260 and 2280. The most common is 2280, of which figure 22 represents width, number 80 on behalf of the length.