Product comparison · 2 internal solid state drives

Samsung SM951 128 GB M.2 PCI Express 3.0 vs Samsung SV843 960 GB 2.5" Serial ATA III

14specifications compared
10differ
4identical
12known for one product only

Key differences

SSD capacity
- SM951 128 GB M.2 PCI Express 3.0:128 GB
- SV843 960 GB 2.5" Serial ATA III:960 GB
SSD form factor
- SM951 128 GB M.2 PCI Express 3.0:M.2
- SV843 960 GB 2.5" Serial ATA III:2.5"
Interface
- SM951 128 GB M.2 PCI Express 3.0:PCI Express 3.0
- SV843 960 GB 2.5" Serial ATA III:Serial ATA III
Read speed
- SM951 128 GB M.2 PCI Express 3.0:2000 MB/s
- SV843 960 GB 2.5" Serial ATA III:530 MB/s
Write speed
- SM951 128 GB M.2 PCI Express 3.0:650 MB/s
- SV843 960 GB 2.5" Serial ATA III:430 MB/s
Width
- SM951 128 GB M.2 PCI Express 3.0:22 mm
- SV843 960 GB 2.5" Serial ATA III:100 mm
Depth
- SM951 128 GB M.2 PCI Express 3.0:80 mm
- SV843 960 GB 2.5" Serial ATA III:70 mm
Height
- SM951 128 GB M.2 PCI Express 3.0:4 mm
- SV843 960 GB 2.5" Serial ATA III:7 mm

Side by side

Differences highlightedShow differences only

Comparison of SM951, SV843
26 specifications	A Samsung SM951 128 GB M.2 PCI Express 3.0 Model SM951 View product	B Samsung SV843 960 GB 2.5" Serial ATA III Model SV843 View product
Features5 differ
SSD capacityDiffers	128 GB	960 GB
SSD form factorDiffers	M.2	2.5"
InterfaceDiffers	PCI Express 3.0	Serial ATA III
Hardware encryptionKnown for one	Unknown — not stated by the source	Yes
Security algorithmsKnown for one	Unknown — not stated by the source	256-bit AES
Data transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
Read speedDiffers	2000 MB/s	530 MB/s
Write speedDiffers	650 MB/s	430 MB/s
Random read (4KB)Known for one	Unknown — not stated by the source	89000 IOPS
Random write (4KB)Known for one	Unknown — not stated by the source	14000 IOPS
Read latencyKnown for one	Unknown — not stated by the source	170 µs
Write latencyKnown for one	Unknown — not stated by the source	3 µs
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	2000000 h
PCI Express interface data lanesKnown for one	x4	Unknown — not stated by the source
Poweridentical
Power consumption (idle)Known for one	Unknown — not stated by the source	1 W
Weight & dimensions4 differ
WidthDiffers	22 mm	100 mm
DepthDiffers	80 mm	70 mm
HeightDiffers	4 mm	7 mm
WeightDiffers	10 g	62 g
Operational conditionsidentical
Operating temperature (T-T)	0 - 70 °C	0 - 70 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 85 °C
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating shock	1500 G	1500 G
Other features1 differ
Product colourDiffers	Green	Black
Internal	Yes	Yes
Connector(s)Known for one	Unknown — not stated by the source	SFF-8223

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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