Compared features | HDD | SSD | And SSD is… |
Data transfer rate (read) | up to 150 MB/s | up to 550MB/s | up to 3,6 times faster |
Data transfer rate (write) | up to 150 MB/s | up to 525MB/s | up to 3,5times faster |
Access time (read) | from 3,5 ms | from 0.15ms | up to23times faster |
Accesstime (write) | from 3,5 ms | from0.25ms | up to14times faster |
Moving parts | yes | no | far more reliable |
Operating shock (max)
| 70 G | 1500 G | up to 25 times more reliable |
Non-operating shock (max) | 350 G | 1500 G | up to 4.3 times more reliable |
Power consumption (idle)
| 4 (W)and more | 0,5 - 1,3 (W) | up to 8 times more power efficient |
Power consumption (Active) | 6 (W)and more | 0,5 - 3 (W) | up to 12 times more power efficient |
Silent mode | no | yes | absolutely noiseless |
Weight | from 100g | from 50g | has at least 2 times smaller weight |
Non-operating temperature | from -40° to 70° C | from -55° to 95° C | resistant to extreme temperatures |
Read IOPS | unlimited | unlimited | identical |
Write IOPS | unlimited | 10 000 cycles | number of write cycles is limited |
Capacity | up to 3 TB | up to 1,5 TB | smaller capacity |
Price for 1GB | from 0,06 € | from 1,39 € | higher price |
All features of SSD and HDD mentioned in the article are up-to-date at the time of this article writing and can change later on. Nowadays solid-state drives are becoming cheaper (within a year they fell in price almost twice). The endurance of memory chips increases thus prolonging their lifetime.
SSD storage capacity increases too. This makes solid-state drive more and more attractive for buyers. At present, speed indicators are limited by the data transfer interface SATA III (6 Gb/s). However the market offers storage devices with PCIe interface which are several times faster.
