| General information |
|---|
| Trademark | Samsung |
| Model | Samsung SSD 840 PRO Series |
| Capacity | 238.4 GB |
| Interface | SATA |
| SATA version | 3.1 |
| Firmware | DXM05B0Q |
| Alternative firmwares | 3 |
| Firmware upgrade | supported |
| SSD controller | Samsung |
| ATA version | ACS-2 |
| Advanced Format | not supported |
| Units tested | 31 |
| Times tested | 120 |
| Performance |
|---|
| Maximum interface speed | 600 MB/s |
| Maximum read speed | 472 MB/s |
| Minimum average access time | 0.5 msec |
| Volatile write cache | supported |
| Read look-ahead | supported |
| Native command queuing (NCQ) | supported |
| Advanced power management (APM) | not supported |
| Device sleep (DevSleep) | supported |
| Clearing unused data (TRIM) | supported |
| Reliability |
|---|
| Count of sensors | 14 |
| SMART command transport (SCT) | supported |
| Full self-test time | 20 minutes |
| Recommended maximum temperature | 70°C (158°F) |
| Maximum temperature | 70°C (158°F) |
| Average maximum temperature | 70°C (158°F) |
| Security |
|---|
| Drive access restriction | supported |
| Enhanced security erase | supported |
| Data destruction time | 2 minutes |
| Instant data destruction | supported |
| Host protected area (HPA) | supported |
| Host protected area password | supported |
| Trusted computing | not supported |