HDD and SSD drives are used for permanent storage of data on computers and laptops. But what are the differences between the two, and what are their advantages?
The capacity (size) of the hard disk determines how much data the disc can accommodate.
Width
60 mm (6 cm)
119 mm (11.9 cm)
Height
18.7 mm (1.87 cm)
217 mm (21.7 cm)
Depth
19.7 mm (1.97 cm)
217 mm (21.7 cm)
Black (4)
Orange (6)
Silver (4)
External interface
USB 2.0 (3)
USB 3.0 (3.1 gen1) (5)
USB 3.1 (3.1 gen2) (2)
USB-C (5)
Thunderbolt (14)
Determines the way in which the hard drive is connected to the computer, namely the type of connector through which the drive connects to the device. Each type of connection is unique, and in most cases these connections are not interchangeable.
Internal interface
M.2 (NVMe) (3)
Determines the way in which the hard drive is connected to the computer, namely the type of connector through which the drive connects to the device. Each type of connection is unique, and in most cases these connections are not interchangeable.
Read Speed
130 MB/s
2,800 MB/s
Memory cache
8 MB
64 MB
Write speed
1,300 MB/s
2,300 MB/s
HDD rotational speed
7,200 RPM (1)
Different hard drives spin at different rates. Simply put, the faster the drive can spin, the faster the reading mechanism manages to read (store) information.