Parameters of PM991 NVMe Samsung 256GB with Firmware 25304039

General information
TrademarkSamsung
ModelPM991 NVMe Samsung 256GB
Capacity256 GB (238.4 GiB)
TypeSSD
InterfaceNVMe
NVMe version1.3
Firmware25304039
Alternative firmwares2
Firmware upgradesupported
Maximum power consumption4 W
Advanced Formatnot supported
Units tested1
Times tested2
Performance
Maximum interface speed3940 MB/s (PCIe 3.0 x4)
Maximum read speed747 MiB/s
Minimum average access time0.26 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 temperature81°C (177°F)
Maximum temperature66°C (150°F)
Average maximum temperature65°C (149°F)
Security
Drive access restrictionsupported
Instant data destructionnot supported