Product comparison · 2 internal solid state drives

Samsung PM1633 1.92 TB 2.5" SAS TLC vs Samsung PM871a 512 GB 2.5" Serial ATA III

5specifications compared
3differ
2identical
22known for one product only

Key differences

SSD capacity
- PM1633 1.92 TB 2.5" SAS TLC:1.92 TB
- PM871a 512 GB 2.5" Serial ATA III:512 GB
Interface
- PM1633 1.92 TB 2.5" SAS TLC:SAS
- PM871a 512 GB 2.5" Serial ATA III:Serial ATA III
Data transfer rate
- PM1633 1.92 TB 2.5" SAS TLC:12 Gbit/s
- PM871a 512 GB 2.5" Serial ATA III:6 Gbit/s

Side by side

Differences highlightedShow differences only

Comparison of PM1633, PM871a
27 specifications	A Samsung PM1633 1.92 TB 2.5" SAS TLC Model PM1633 View product	B Samsung PM871a 512 GB 2.5" Serial ATA III Model PM871a View product
Features3 differ
SSD capacityDiffers	1.92 TB	512 GB
InterfaceDiffers	SAS	Serial ATA III
Memory typeKnown for one	TLC	Unknown — not stated by the source
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Data transfer rateDiffers	12 Gbit/s	6 Gbit/s
Read speedKnown for one	1350 MB/s	Unknown — not stated by the source
Write speedKnown for one	750 MB/s	Unknown — not stated by the source
Random read (4KB)Known for one	190000 IOPS	Unknown — not stated by the source
Random write (4KB)Known for one	37000 IOPS	Unknown — not stated by the source
S.M.A.R.T. supportKnown for one	Yes	Unknown — not stated by the source
Uncorrectable Bit Error Rate (UBER)Known for one	< 1 per 10^17 bits read	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	2000000 h	Unknown — not stated by the source
SSD usage tagKnown for one	Data center	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	70 mm	Unknown — not stated by the source
DepthKnown for one	100 mm	Unknown — not stated by the source
HeightKnown for one	15 mm	Unknown — not stated by the source
WeightKnown for one	140 g	Unknown — not stated by the source
Other featuresidentical
NAND controllerKnown for one	V-NAND	Unknown — not stated by the source
SSD endurance ratingKnown for one	1 DWPD	Unknown — not stated by the source
Sequential read/writeKnown for one	Yes	Unknown — not stated by the source
InternalKnown for one	Unknown — not stated by the source	Yes
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 - 85 °C
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating shockKnown for one	Unknown — not stated by the source	1500 G

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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