Product comparison · 2 internal solid state drives

Samsung SM843T 120 GB 2.5" Serial ATA MLC vs Seagate ST400FP0021 internal solid state drive

Key differences

SSD capacity
- SM843T 120 GB 2.5" Serial ATA MLC:120 GB
- ST400FP0021 internal solid state drive:400 GB
Interface
- SM843T 120 GB 2.5" Serial ATA MLC:Serial ATA
- ST400FP0021 internal solid state drive:Serial ATA III
Read speed
- SM843T 120 GB 2.5" Serial ATA MLC:530 MB/s
- ST400FP0021 internal solid state drive:520 MB/s
Write speed
- SM843T 120 GB 2.5" Serial ATA MLC:420 MB/s
- ST400FP0021 internal solid state drive:450 MB/s
Random read (4KB)
- SM843T 120 GB 2.5" Serial ATA MLC:60000 IOPS
- ST400FP0021 internal solid state drive:85000 IOPS
Random write (4KB)
- SM843T 120 GB 2.5" Serial ATA MLC:11500 IOPS
- ST400FP0021 internal solid state drive:30000 IOPS
Power consumption (idle)
- SM843T 120 GB 2.5" Serial ATA MLC:0.3 W
- ST400FP0021 internal solid state drive:1.25 W

Differences highlightedShow differences only

Comparison of SM843T, ST400FP0021
21 specifications	A Samsung SM843T 120 GB 2.5" Serial ATA MLC Model SM843T View product	B Seagate ST400FP0021 internal solid state drive Model ST400FP0021 View product
Features6 differ
SSD capacityDiffers	120 GB	400 GB
InterfaceDiffers	Serial ATA	Serial ATA III
Read speedDiffers	530 MB/s	520 MB/s
Write speedDiffers	420 MB/s	450 MB/s
Random read (4KB)Differs	60000 IOPS	85000 IOPS
Random write (4KB)Differs	11500 IOPS	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
Power1 differ
Power consumption (standby)Known for one	Unknown — not stated by the source	2.8 W
Power consumption (idle)Differs	0.3 W	1.25 W
Power consumptionKnown for one	Unknown — not stated by the source	500 mA
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	70.1 mm
DepthKnown for one	Unknown — not stated by the source	100.5 mm
HeightKnown for one	Unknown — not stated by the source	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

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.