As an innovator of modern computer storage technology, Solid State Drive (SSD) has gradually replaced traditional mechanical hard disks (HDDs) with its high-speed read and write performance, low noise, and strong shock resistance. There are various types of SSDs. The following is a summary of their common types:
1. SATA SSD
SATA SSD is the earliest popular type of SSD. It uses the SATA interface to connect to the motherboard. The transmission speed of this interface is about 500MB/s. Although it is inferior to the new interface, it can still meet the needs of most daily office and home use. SATA SSDs are relatively affordable, have large capacity, and have a long service life. They are suitable for upgrading old systems and can significantly improve the system startup speed and program loading speed. They are an economical choice.
2. M.2 SSD
M.2 SSD is a smaller and more flexible type of SSD that is directly connected to the motherboard through the M.2 slot. The size of the M.2 SSD is only 80mm long, 22mm wide, and 1mm thick, which is much smaller than a 2.5-inch hard drive and is particularly suitable for laptops. M.2 solid-state drives can be divided into two types, M.2 SATA and M.2 NVMe, according to the supported protocols:
M.2 SATA SSD: Similar to SATA SSD in performance, but smaller in size, suitable for laptops and desktops with limited space.
M.2 NVMe SSD: Using the NVMe protocol, data is transmitted through the PCIe channel, which is much faster than SATA SSD. M.2 NVMe SSDs that support PCIe 3.0 and PCIe 4.0 have a transmission speed of 2000MB/s to 7000MB/s, which is very suitable for users who need high performance, such as gamers, video editors, etc.
3. U.2 solid-state drive
U.2 solid-state drive uses the U.2 interface, which is a continuation and upgrade of SATA and NVMe solid-state drives. The theoretical maximum speed of the U.2 interface can reach 32Gb/s per second, which is 8 times that of the SATA interface. U.2 solid-state drives have a long service life and are more shock-resistant and drop-resistant.
4. mSATA SSD
The mSATA SSD is a small solid-state drive before the emergence of M.2 SSD, which is about one-eighth the size of a 2.5-inch hard drive. It can only be used in the mSATA slot on the system motherboard, and is often used in ultra-thin and small devices, or as an auxiliary hard drive in desktop computers. However, with the popularity of M.2 SSD, mSATA SSD has gradually faded out of the market.
