Product comparison · 2 internal solid state drives

Samsung 840 120 GB 2.5" Serial ATA III vs Samsung SM843T 120 GB 2.5" Serial ATA MLC

8specifications compared
4differ
4identical
17known for one product only

Key differences

Interface
- 840 120 GB 2.5" Serial ATA III:Serial ATA III
- SM843T 120 GB 2.5" Serial ATA MLC:Serial ATA
Write speed
- 840 120 GB 2.5" Serial ATA III:130 MB/s
- SM843T 120 GB 2.5" Serial ATA MLC:420 MB/s
Random read (4KB)
- 840 120 GB 2.5" Serial ATA III:85000 IOPS
- SM843T 120 GB 2.5" Serial ATA MLC:60000 IOPS
Random write (4KB)
- 840 120 GB 2.5" Serial ATA III:32000 IOPS
- SM843T 120 GB 2.5" Serial ATA MLC:11500 IOPS

Side by side

Differences highlightedShow differences only

Comparison of 840, SM843T
25 specifications	A Samsung 840 120 GB 2.5" Serial ATA III Model 840 View product	B Samsung SM843T 120 GB 2.5" Serial ATA MLC Model SM843T View product
Features4 differ
SSD capacity	120 GB	120 GB
SSD form factor	2.5"	2.5"
InterfaceDiffers	Serial ATA III	Serial ATA
Data transfer rate	6 Gbit/s	6 Gbit/s
Read speed	530 MB/s	530 MB/s
Write speedDiffers	130 MB/s	420 MB/s
Random read (4KB)Differs	85000 IOPS	60000 IOPS
Random write (4KB)Differs	32000 IOPS	11500 IOPS
Memory typeKnown for one	Unknown — not stated by the source	MLC
LithographyKnown for one	Unknown — not stated by the source	21 nm
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
Power consumption (idle)Known for one	Unknown — not stated by the source	0.3 W
Weight & dimensionsidentical
HeightKnown for one	7 mm	Unknown — not stated by the source
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 colourKnown for one	Black	Unknown — not stated by the source
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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