Product comparison · 2 internal solid state drives

Samsung 950 PRO vs Samsung PM863 120 GB 2.5" Serial ATA III

18specifications compared
12differ
6identical
13known for one product only

Key differences

SSD capacity
- 950 PRO:256 GB
- PM863 120 GB 2.5" Serial ATA III:120 GB
SSD form factor
- 950 PRO:M.2
- PM863 120 GB 2.5" Serial ATA III:2.5"
Interface
- 950 PRO:PCI Express
- PM863 120 GB 2.5" Serial ATA III:Serial ATA III
Data transfer rate
- 950 PRO:32 Gbit/s
- PM863 120 GB 2.5" Serial ATA III:6 Gbit/s
Read speed
- 950 PRO:2200 MB/s
- PM863 120 GB 2.5" Serial ATA III:380 MB/s
Write speed
- 950 PRO:900 MB/s
- PM863 120 GB 2.5" Serial ATA III:125 MB/s
Random read (4KB)
- 950 PRO:270000 IOPS
- PM863 120 GB 2.5" Serial ATA III:86000 IOPS
Random write (4KB)
- 950 PRO:85000 IOPS
- PM863 120 GB 2.5" Serial ATA III:5000 IOPS

Side by side

Differences highlightedShow differences only

Comparison of 950 PRO, PM863
31 specifications	A Samsung 950 PRO View product	B Samsung PM863 120 GB 2.5" Serial ATA III Model PM863 View product
Features8 differ
SSD capacityDiffers	256 GB	120 GB
SSD form factorDiffers	M.2	2.5"
InterfaceDiffers	PCI Express	Serial ATA III
Security algorithmsKnown for one	256-bit AES	Unknown — not stated by the source
Data transfer rateDiffers	32 Gbit/s	6 Gbit/s
Read speedDiffers	2200 MB/s	380 MB/s
Write speedDiffers	900 MB/s	125 MB/s
Random read (4KB)Differs	270000 IOPS	86000 IOPS
Random write (4KB)Differs	85000 IOPS	5000 IOPS
Storage drive buffer sizeKnown for one	512 MB	Unknown — not stated by the source
PCI Express interface data lanesKnown for one	x4	Unknown — not stated by the source
S.M.A.R.T. supportKnown for one	Yes	Unknown — not stated by the source
TRIM supportKnown for one	Yes	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1500000 h	Unknown — not stated by the source
TBW ratingKnown for one	200	Unknown — not stated by the source
Poweridentical
Power consumption (read)Known for one	5.1 W	Unknown — not stated by the source
Power consumption (write)Known for one	5.1 W	Unknown — not stated by the source
Power consumption (sleep)Known for one	0.0025 W	Unknown — not stated by the source
Power consumption (idle)Known for one	0.07 W	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	80.2 mm	100.2 mm
DepthDiffers	22.1 mm	6.8 mm
HeightDiffers	2.38 mm	69.8 mm
WeightDiffers	10 g	60 g
Operational conditionsidentical
Operating temperature (T-T)	0 - 70 °C	0 - 70 °C
Storage temperature (T-T)	-40 - 85 °C	-40 - 85 °C
Operating relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating vibrationKnown for one	20 G	Unknown — not stated by the source
Operating shock	1500 G	1500 G
Other featuresidentical
Product colour	Black	Black
Internal	Yes	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.

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