Product comparison · 2 internal solid state drives

Lenovo 4XB1T87551 internal solid state drive vs Lenovo 4XB7B01881 internal solid state drive

12specifications compared
8differ
4identical
23known for one product only

Key differences

SSD capacity
- 4XB1T87551 internal solid state drive:512 GB
- 4XB7B01881 internal solid state drive:6.4 TB
SSD form factor
- 4XB1T87551 internal solid state drive:M.2
- 4XB7B01881 internal solid state drive:U.2
Component for
- 4XB1T87551 internal solid state drive:PC
- 4XB7B01881 internal solid state drive:Server/workstation
Width
- 4XB1T87551 internal solid state drive:80 mm
- 4XB7B01881 internal solid state drive:70 mm
Depth
- 4XB1T87551 internal solid state drive:22 mm
- 4XB7B01881 internal solid state drive:100 mm
Height
- 4XB1T87551 internal solid state drive:2.38 mm
- 4XB7B01881 internal solid state drive:15 mm
Weight
- 4XB1T87551 internal solid state drive:9 g
- 4XB7B01881 internal solid state drive:146 g

Side by side

Differences highlightedShow differences only

Comparison of 4XB1T87551, 4XB7B01881
35 specifications	A Lenovo 4XB1T87551 internal solid state drive Model 4XB1T87551 View product	B Lenovo 4XB7B01881 internal solid state drive Model 4XB7B01881 View product
Features4 differ
SSD capacityDiffers	512 GB	6.4 TB
SSD form factorDiffers	M.2	U.2
Interface	PCI Express 4.0	PCI Express 4.0
NVMe	Yes	Yes
Memory typeKnown for one	Unknown — not stated by the source	TLC 3D NAND
Component forDiffers	PC	Server/workstation
Hardware encryptionKnown for one	Unknown — not stated by the source	Yes
Random read (4KB)Known for one	Unknown — not stated by the source	1100000 IOPS
Random write (4KB)Known for one	Unknown — not stated by the source	390000 IOPS
Read latencyKnown for one	Unknown — not stated by the source	75 µs
Write latencyKnown for one	Unknown — not stated by the source	15 µs
Hot-swapKnown for one	Unknown — not stated by the source	Yes
Uncorrectable Bit Error Rate (UBER)Known for one	Unknown — not stated by the source	< 1 per 10^17 bits read
Drive writes per day (DWPD)Known for one	Unknown — not stated by the source	3
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	2000000 h
CertificationDiffers	BSMI FCC ICES VCCI UK DoC KCC RCM EMC CB Morocco DoC	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
Read speedKnown for one	3500 MB/s	Unknown — not stated by the source
Write speedKnown for one	2500 MB/s	Unknown — not stated by the source
Windows operating systems supportedKnown for one	Windows 11	Unknown — not stated by the source
Poweridentical
Power consumption (read)Known for one	Unknown — not stated by the source	18 W
Power consumption (write)Known for one	Unknown — not stated by the source	18 W
Weight & dimensions4 differ
WidthDiffers	80 mm	70 mm
DepthDiffers	22 mm	100 mm
HeightDiffers	2.38 mm	15 mm
WeightDiffers	9 g	146 g
Operational conditionsidentical
Operating temperature (T-T)	0 - 70 °C	0 - 70 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Operating vibrationKnown for one	Unknown — not stated by the source	2.17 G
Operating shockKnown for one	Unknown — not stated by the source	1000 G
Maximum operating altitudeKnown for one	Unknown — not stated by the source	3048 m
Packaging dataidentical
Package widthKnown for one	177 mm	Unknown — not stated by the source
Package depthKnown for one	144 mm	Unknown — not stated by the source
Package heightKnown for one	53 mm	Unknown — not stated by the source
Package weightKnown for one	71 g	Unknown — not stated by the source
Package typeKnown for one	Box	Unknown — not stated by the source

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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