|
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.
