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
SSD form factor	2.5"	2.5"
InterfaceDiffers	Serial ATA	Serial ATA III
Memory type	MLC	MLC
Data transfer rate	6 Gbit/s	6 Gbit/s
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.