Compare any two Solid State Drives:

VS

Kingston A400 SSD 120GB vs Western Digital WD Blue SN550 NVMe SSD 250GB

Display Graphs

Hide Graphs

Specification Charts

Capacity

WD Blue SN550 NVMe SSD 250GB 250 GB
A400 SSD 120GB 128 GB
Difference: 122 (95%)

Random Read

A400 SSD 120GB N/A IOPS
WD Blue SN550 NVMe SSD 250GB 170000 IOPS
Difference: -170000 (-100%)

Random Write

A400 SSD 120GB N/A IOPS
WD Blue SN550 NVMe SSD 250GB 135000 IOPS
Difference: -135000 (-100%)

Sequential Read

WD Blue SN550 NVMe SSD 250GB 2400 MB/sec
A400 SSD 120GB 500 MB/sec
Difference: 1900 (380%)

Sequential Write

WD Blue SN550 NVMe SSD 250GB 950 MB/sec
A400 SSD 120GB 320 MB/sec
Difference: 630 (197%)

Endurance

WD Blue SN550 NVMe SSD 250GB 150 TB
A400 SSD 120GB 40 TB
Difference: 110 (275%)

Specifications

Display Specifications

Hide Specifications

Model A400 SSD 120GB WD Blue SN550 NVMe SSD 250GB
Manufacturer Kingston Western Digital
NAND 3bit TLC NAND SanDisk 96L TLC
Form Factor 2.5" SATA III M.2 (2280)
Capacity 128 GB 250 GB
Cache N/A MB (N/A) MB
Sequential Read 500 MB/s 2400 MB/s
Sequential Write 320 MB/s 950 MB/s
Random Read N/A IOPS 170000 IOPS
Random Write N/A IOPS 135000 IOPS
Interface SATA III NVMe 1.4
Controller Phison S11 WD Architecture
Date Released 2017 2019
Endurance 40 TB 150 TB
Notes 3-Year Limited Warranty 5-Year Warranty

Price Comparison

Display Prices

Hide Prices

A400 SSD 120GB

Amazon.com

Check prices at:

WD Blue SN550 NVMe SSD 250GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.