Parameters of PM991 NVMe Samsung 256GB with Firmware 25307039

General information
TrademarkSamsung
ModelPM991 NVMe Samsung 256GB
Capacity256 GB (238.4 GiB)
TypeSSD
InterfaceNVMe
NVMe version1.3
Firmware25307039
Alternative firmwares2
Firmware upgradesupported
Maximum power consumption4 W
Advanced Formatnot supported
Units tested1
Times tested1
Performance
Maximum interface speed3940 MB/s (PCIe 3.0 x4)
Maximum read speed575 MiB/s
Minimum average access time0.21 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 temperature46°C (114°F)
Average maximum temperature46°C (114°F)
Security
Drive access restrictionsupported
Instant data destructionnot supported