Parameters of PM991a NVMe Samsung 256GB with Firmware 26304039

General information
TrademarkSamsung
ModelPM991a NVMe Samsung 256GB
Capacity256 GB (238.4 GiB)
TypeSSD
InterfaceNVMe
NVMe version1.4
Firmware26304039
Alternative firmwares1
Firmware upgradesupported
Maximum power consumption5 W
Advanced Formatnot supported
Units tested2
Times tested3
Performance
Maximum interface speed3940 MB/s (PCIe 3.0 x4)
Maximum read speed974 MiB/s
Minimum average access time0.17 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 temperature81°C (177°F)
Average maximum temperature73°C (163°F)
Security
Drive access restrictionsupported
Instant data destructionnot supported