Product comparison · 2 internal solid state drives

Samsung 840 120 GB 2.5" Serial ATA III vs Samsung SM843 120 GB 2.5" Serial ATA III

8specifications compared
2differ
6identical
14known for one product only

Key differences

Read speed
- 840 120 GB 2.5" Serial ATA III:530 MB/s
- SM843 120 GB 2.5" Serial ATA III:520 MB/s
Write speed
- 840 120 GB 2.5" Serial ATA III:130 MB/s
- SM843 120 GB 2.5" Serial ATA III:420 MB/s

Side by side

Differences highlightedShow differences only

Comparison of 840, SM843
22 specifications	A Samsung 840 120 GB 2.5" Serial ATA III Model 840 View product	B Samsung SM843 120 GB 2.5" Serial ATA III Model SM843 View product
Features2 differ
SSD capacity	120 GB	120 GB
SSD form factor	2.5"	2.5"
Interface	Serial ATA III	Serial ATA III
Data transfer rate	6 Gbit/s	6 Gbit/s
Read speedDiffers	530 MB/s	520 MB/s
Write speedDiffers	130 MB/s	420 MB/s
Random read (4KB)Known for one	85000 IOPS	Unknown — not stated by the source
Random write (4KB)Known for one	32000 IOPS	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	5 V	Unknown — not stated by the source
Power consumption (read)Known for one	0.15 W	Unknown — not stated by the source
Power consumption (write)Known for one	0.15 W	Unknown — not stated by the source
Weight & dimensionsidentical
Height	7 mm	7 mm
WeightKnown for one	70 g	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 70 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 85 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating shockKnown for one	1500 G	Unknown — not stated by the source
Other featuresidentical
Product colour	Black	Black
InternalKnown for one	Yes	Unknown — not stated by the source
Compatible operating systemsKnown for one	Windows 7 (32-bit / 64-bit), Vista, XP, MAC OSX, Linux	Unknown — not stated by the source
Connectivity technologyKnown for one	Wired	Unknown — not stated by the source

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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