Parameters of PM991 NVMe Samsung 256GB with Firmware 25311039

General information
TrademarkSamsung
ModelPM991 NVMe Samsung 256GB
Capacity256 GB (238.4 GiB)
TypeSSD
InterfaceNVMe
NVMe version1.3
Firmware25311039
Alternative firmwares2
Firmware upgradesupported
Maximum power consumption4 W
Advanced Formatnot supported
Units tested2
Times tested2
Performance
Maximum interface speed3940 MB/s (PCIe 3.0 x4)
Maximum read speed1688 MiB/s
Minimum average access time0.7 msec
Clearing unused data (TRIM)supported
Host memory buffer (HMB)supported (64 MiB)
Throttling temperature controlsupported
Reliability
Full self-test time35 minutes
Critical maximum temperature85°C (185°F)
Recommended maximum temperature83°C (181°F)
Maximum temperature75°C (167°F)
Average maximum temperature62°C (143°F)
Security
Drive access restrictionsupported
Instant data destructionnot supported