Product comparison · 2 internal solid state drives

Samsung SM843TN 480 GB 2.5" Serial ATA III MLC vs Seagate ST400FP0021 internal solid state drive

Key differences

SSD capacity
- SM843TN 480 GB 2.5" Serial ATA III MLC:480 GB
- ST400FP0021 internal solid state drive:400 GB
Read speed
- SM843TN 480 GB 2.5" Serial ATA III MLC:500 MB/s
- ST400FP0021 internal solid state drive:520 MB/s
Write speed
- SM843TN 480 GB 2.5" Serial ATA III MLC:400 MB/s
- ST400FP0021 internal solid state drive:450 MB/s
Width
- SM843TN 480 GB 2.5" Serial ATA III MLC:70 mm
- ST400FP0021 internal solid state drive:70.1 mm
Depth
- SM843TN 480 GB 2.5" Serial ATA III MLC:100 mm
- ST400FP0021 internal solid state drive:100.5 mm

Differences highlightedShow differences only

Comparison of SM843TN, ST400FP0021
22 specifications	A Samsung SM843TN 480 GB 2.5" Serial ATA III MLC Model SM843TN View product	B Seagate ST400FP0021 internal solid state drive Model ST400FP0021 View product
Features3 differ
SSD capacityDiffers	480 GB	400 GB
SSD form factor	2.5"	2.5"
Interface	Serial ATA III	Serial ATA III
Memory type	MLC	MLC
Data transfer rate	6 Gbit/s	6 Gbit/s
Read speedDiffers	500 MB/s	520 MB/s
Write speedDiffers	400 MB/s	450 MB/s
Random read (4KB)Known for one	Unknown — not stated by the source	85000 IOPS
Random write (4KB)Known for one	Unknown — not stated by the source	30000 IOPS
S.M.A.R.T. supportKnown for one	Unknown — not stated by the source	Yes
LithographyKnown for one	21 nm	Unknown — not stated by the source
Poweridentical
Power consumption (standby)Known for one	Unknown — not stated by the source	2.8 W
Power consumption (idle)Known for one	Unknown — not stated by the source	1.25 W
Power consumptionKnown for one	Unknown — not stated by the source	500 mA
Weight & dimensions2 differ
WidthDiffers	70 mm	70.1 mm
DepthDiffers	100 mm	100.5 mm
Height	7 mm	7 mm
WeightKnown for one	Unknown — not stated by the source	100 g
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 70 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 75 °C
Other featuresidentical
InternalKnown for one	Unknown — not stated by the source	Yes
Product colourKnown for one	Black	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.