However, when the drive is connected to SATA 3 Gb/s port, it can reach up to 285/275MB/s sequential read and sequential write speed rates respectively. However, the maximum speed of the drive will be slower due to the lower speed limitations of the port.Įxample: SanDisk Extreme SSD, which supports SATA 6Gb/s interface and when connected to SATA 6Gb/s port, can reach up to 550/520MB/s sequential read and sequential write speed rates respectively. SATA III specifications provide backward compatibility to function on SATA I and SATA II ports. SATA II specifications provide backward compatibility to function on SATA I ports. This interface is backwards compatible with SATA 3 Gb/s interface.
3.5-inch desktop-class 1 TB drives measure approximately 4 inches wide, 5.8 inches long, and 0.8 inches thick. The bandwidth throughput, which is supported by the interface, is up to 600MB/s. 2.5-inch VS 3.5-inch HDD: Physical Dimension is Quite Important Now you have already known that 2.5-inch hard drives are comparatively smaller than 3.5-inch hard drives. SATA III (revision 3.x) interface, formally known as SATA 6Gb/s, is a third generation SATA interface running at 6.0Gb/s. The bandwidth throughput, which is supported by the interface, is up to 300MB/s. SATA II (revision 2.x) interface, formally known as SATA 3Gb/s, is a second generation SATA interface running at 3.0 Gb/s. The bandwidth throughput, which is supported by the interface, is up to 150MB/s. SATA I (revision 1.x) interface, formally known as SATA 1.5Gb/s, is the first generation SATA interface running at 1.5 Gb/s.
