Product comparison · 2 internal solid state drives

Lenovo 4XB0W79581 internal solid state drive vs Lenovo 4XB7A38144 internal solid state drive

13specifications compared
11differ
2identical
23known for one product only

Key differences

The Lenovo 4XB0W79581 internal solid state drive has 2,960 MB/s more read speed than the Lenovo 4XB7A38144 internal solid state drive (3500 MB/s vs 540 MB/s). The Lenovo 4XB0W79581 internal solid state drive has 2,735 MB/s more write speed than the Lenovo 4XB7A38144 internal solid state drive (2900 MB/s vs 165 MB/s). The Lenovo 4XB0W79581 internal solid state drive has 10 mm more width than the Lenovo 4XB7A38144 internal solid state drive (80 mm vs 70 mm). Only the Lenovo 4XB0W79581 internal solid state drive has NVMe. SSD capacity: 512 GB on the Lenovo 4XB0W79581 internal solid state drive, 1.92 TB on the Lenovo 4XB7A38144 internal solid state drive.

SSD capacity
- 4XB0W79581 internal solid state drive:512 GB
- 4XB7A38144 internal solid state drive:1.92 TB
SSD form factor
- 4XB0W79581 internal solid state drive:M.2
- 4XB7A38144 internal solid state drive:2.5"
Interface
- 4XB0W79581 internal solid state drive:PCI Express 3.0
- 4XB7A38144 internal solid state drive:Serial ATA III
NVMe
- 4XB0W79581 internal solid state drive:Yes
- 4XB7A38144 internal solid state drive:No
Component for
- 4XB0W79581 internal solid state drive:Laptop
- 4XB7A38144 internal solid state drive:Server/workstation
Read speed
- 4XB0W79581 internal solid state drive:3500 MB/s
- 4XB7A38144 internal solid state drive:540 MB/s
Write speed
- 4XB0W79581 internal solid state drive:2900 MB/s
- 4XB7A38144 internal solid state drive:165 MB/s
Width
- 4XB0W79581 internal solid state drive:80 mm
- 4XB7A38144 internal solid state drive:70 mm

Side by side

Differences highlightedShow differences only

Comparison of 4XB0W79581, 4XB7A38144
36 specifications	A Lenovo 4XB0W79581 internal solid state drive Model 4XB0W79581 View product	B Lenovo 4XB7A38144 internal solid state drive Model 4XB7A38144 View product
Features7 differ
SSD capacityDiffers	512 GB	1.92 TB
SSD form factorDiffers	M.2	2.5"
InterfaceDiffers	PCI Express 3.0	Serial ATA III
NVMeDiffers	Yes	No
Memory typeKnown for one	Unknown — not stated by the source	QLC 3D NAND
Component forDiffers	Laptop	Server/workstation
Hardware encryptionKnown for one	Unknown — not stated by the source	Yes
Security algorithmsKnown for one	Unknown — not stated by the source	256-bit AES
Data transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
Read speedDiffers	3500 MB/s	540 MB/s
Write speedDiffers	2900 MB/s	165 MB/s
Random read (4KB)Known for one	Unknown — not stated by the source	70 IOPS
Random write (4KB)Known for one	Unknown — not stated by the source	2 IOPS
Read latencyKnown for one	Unknown — not stated by the source	310 µs
Write latencyKnown for one	Unknown — not stated by the source	530 µs
Hot-swapKnown for one	Unknown — not stated by the source	Yes
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	2000000 h
M.2 SSD sizeKnown for one	2280 (22 x 80 mm)	Unknown — not stated by the source
Windows operating systems supportedKnown for one	Yes	Unknown — not stated by the source
CertificationKnown for one	CE, FCC, IC, RCM, Morocco, KC, VCCI, BSMI, c-UL-us, CE, TUV-GS, CB, CE, BSMI	Unknown — not stated by the source
Poweridentical
Power consumption (read)Known for one	Unknown — not stated by the source	2.8 W
Power consumption (write)Known for one	Unknown — not stated by the source	3.9 W
Weight & dimensions4 differ
WidthDiffers	80 mm	70 mm
DepthDiffers	22 mm	100 mm
HeightDiffers	2.28 mm	7 mm
WeightDiffers	9 g	70 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 - 85 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Other featuresidentical
Compliance certificates	RoHS	RoHS
Logistics dataidentical
Harmonized System (HS) code	84717070	84717070
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	120 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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