Product comparison · 2 internal solid state drives

Lenovo 4XB0N68517 internal solid state drive vs Lenovo 4XB0N68521 internal solid state drive

24specifications compared
7differ
17identical
19known for one product only

Key differences

Drive writes per day (DWPD)
- 4XB0N68517 internal solid state drive:1.06
- 4XB0N68521 internal solid state drive:3
Power consumption (write)
- 4XB0N68517 internal solid state drive:3.6 W
- 4XB0N68521 internal solid state drive:4.5 W
Width
- 4XB0N68517 internal solid state drive:174 mm
- 4XB0N68521 internal solid state drive:70 mm
Depth
- 4XB0N68517 internal solid state drive:133 mm
- 4XB0N68521 internal solid state drive:100 mm
Height
- 4XB0N68517 internal solid state drive:63 mm
- 4XB0N68521 internal solid state drive:7 mm
Weight
- 4XB0N68517 internal solid state drive:434 g
- 4XB0N68521 internal solid state drive:63 g
Endurance rating
- 4XB0N68517 internal solid state drive:1.86 PB
- 4XB0N68521 internal solid state drive:5.25 PB

Side by side

Differences highlightedShow differences only

Comparison of 4XB0N68517, 4XB0N68521
43 specifications	A Lenovo 4XB0N68517 internal solid state drive Model 4XB0N68517 View product	B Lenovo 4XB0N68521 internal solid state drive Model 4XB0N68521 View product
Features1 differ
SSD capacity	960 GB	960 GB
SSD form factor	2.5"	2.5"
Interface	Serial ATA III	Serial ATA III
NVMe	No	No
Memory type	3D TLC NAND	3D TLC NAND
Component for	Server/workstation	Server/workstation
Hardware encryption	Yes	Yes
Security algorithms	256-bit AES	256-bit AES
Data transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
Maximum read (4KB)Known for one	Unknown — not stated by the source	72000 IOPS
Maximum write (4KB)Known for one	Unknown — not stated by the source	65000 IOPS
Read latencyKnown for one	Unknown — not stated by the source	36 µs
Write latencyKnown for one	Unknown — not stated by the source	36 µs
S.M.A.R.T. support	Yes	Yes
Hot-swapKnown for one	Unknown — not stated by the source	Yes
End-to-End Data ProtectionKnown for one	Unknown — not stated by the source	Yes
Uncorrectable Bit Error Rate (UBER)	< 1 per 10^17 bits read	< 1 per 10^17 bits read
Drive writes per day (DWPD)Differs	1.06	3
Mean time between failures (MTBF)	2000000 h	2000000 h
Random read (4KB)Known for one	72000 IOPS	Unknown — not stated by the source
Random write (4KB)Known for one	30000 IOPS	Unknown — not stated by the source
Sequential latency - read (up to)Known for one	36 µs	Unknown — not stated by the source
Sequential latency - write (up to)Known for one	36 µs	Unknown — not stated by the source
CertificationKnown for one	FCC Title 47, Part 15B, Class B CA/CSA-CEI/IEC CISPR 22:02 EN 55024: 1998 EN 55022: 2006 EN-60950-1 2nd Edition UL/CSA EN-60950-1 2nd Edition Low Voltage Directive 2006/95/EC C-Tick: AS/NZS3584 BSMI: CNS 13438 KCC Article 11.1 RoHS DIRECTIVE 2011/65/EU WEEE Directive 2002/96/EC	Unknown — not stated by the source
Power1 differ
Power consumption (write)Differs	3.6 W	4.5 W
Weight & dimensions4 differ
WidthDiffers	174 mm	70 mm
DepthDiffers	133 mm	100 mm
HeightDiffers	63 mm	7 mm
WeightDiffers	434 g	63 g
Packaging dataidentical
Package widthKnown for one	Unknown — not stated by the source	174 mm
Package depthKnown for one	Unknown — not stated by the source	133 mm
Package heightKnown for one	Unknown — not stated by the source	63 mm
Package weightKnown for one	Unknown — not stated by the source	434 g
Storage drive adapter includedKnown for one	Yes	Unknown — not stated by the source
Storage drive adapter typeKnown for one	2.5" - 3.5"	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)	0 - 70 °C	0 - 70 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Operating vibration	2.17 G	2.17 G
Non-operating vibration	3.13 G	3.13 G
Operating shock	1000 G	1000 G
Maximum operating altitude	3050 m	3050 m
Other features1 differ
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Endurance ratingDiffers	1.86 PB	5.25 PB

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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