Product comparison · 2 internal solid state drives

Lenovo 4XB7A90878 internal solid state drive vs Lenovo 4XB7A90881 internal solid state drive

18specifications compared
7differ
11identical
16known for one product only

Key differences

The Lenovo 4XB7A90881 internal solid state drive has 60 MB/s more read speed than the Lenovo 4XB7A90878 internal solid state drive (480 MB/s vs 420 MB/s). The Lenovo 4XB7A90881 internal solid state drive has 250 MB/s more write speed than the Lenovo 4XB7A90878 internal solid state drive (460 MB/s vs 210 MB/s). The Lenovo 4XB7A90881 internal solid state drive has 42,500 IOPS more random read (4KB) than the Lenovo 4XB7A90878 internal solid state drive (82000 IOPS vs 39500 IOPS). Only the Lenovo 4XB7A90881 internal solid state drive has hardware encryption. SSD capacity: 240 GB on the Lenovo 4XB7A90878 internal solid state drive, 1.92 TB on the Lenovo 4XB7A90881 internal solid state drive.

SSD capacity
- 4XB7A90878 internal solid state drive:240 GB
- 4XB7A90881 internal solid state drive:1.92 TB
Hardware encryption
- 4XB7A90878 internal solid state drive:No
- 4XB7A90881 internal solid state drive:Yes
Read speed
- 4XB7A90878 internal solid state drive:420 MB/s
- 4XB7A90881 internal solid state drive:480 MB/s
Write speed
- 4XB7A90878 internal solid state drive:210 MB/s
- 4XB7A90881 internal solid state drive:460 MB/s
Random read (4KB)
- 4XB7A90878 internal solid state drive:39500 IOPS
- 4XB7A90881 internal solid state drive:82000 IOPS
Random write (4KB)
- 4XB7A90878 internal solid state drive:10000 IOPS
- 4XB7A90881 internal solid state drive:28000 IOPS
Non-operating shock
- 4XB7A90878 internal solid state drive:1500 G
- 4XB7A90881 internal solid state drive:20 G

Side by side

Differences highlightedShow differences only

Comparison of 4XB7A90878, 4XB7A90881
34 specifications	A Lenovo 4XB7A90878 internal solid state drive Model 4XB7A90878 View product	B Lenovo 4XB7A90881 internal solid state drive Model 4XB7A90881 View product
Features6 differ
SSD capacityDiffers	240 GB	1.92 TB
Memory typeKnown for one	Unknown — not stated by the source	V-NAND TLC
Hardware encryptionDiffers	No	Yes
Read speedDiffers	420 MB/s	480 MB/s
Write speedDiffers	210 MB/s	460 MB/s
Random read (4KB)Differs	39500 IOPS	82000 IOPS
Random write (4KB)Differs	10000 IOPS	28000 IOPS
S.M.A.R.T. supportKnown for one	Unknown — not stated by the source	Yes
ECCKnown for one	Unknown — not stated by the source	Yes
H/W PLP functionKnown for one	Unknown — not stated by the source	Yes
Hot-swapKnown for one	Unknown — not stated by the source	Yes
Drive writes per day (DWPD)Known for one	Unknown — not stated by the source	1
CertificationKnown for one	Unknown — not stated by the source	UL TUV FCC CE Mark C-Tick Mark BSMI (Taiwan) KCC (Korea EMI)
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	70 mm
DepthKnown for one	Unknown — not stated by the source	100 mm
HeightKnown for one	Unknown — not stated by the source	7 mm
Operational conditions1 differ
Operating shockKnown for one	Unknown — not stated by the source	1500 G
Non-operating shockDiffers	1500 G	20 G
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Non-operating vibrationKnown for one	20 G	Unknown — not stated by the source
Other featuresidentical
Sequential read/writeKnown for one	Unknown — not stated by the source	Yes
Sequential readingKnown for one	Unknown — not stated by the source	480 MB/s
Sequential writing speedKnown for one	Unknown — not stated by the source	460 MB/s

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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