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Samsung 850 Pro 256GB vs Kingston A400 SSD 120GB

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Specification Charts


850 Pro 256GB 256 GB
A400 SSD 120GB 128 GB
Difference: 128 (100%)

Random Read

850 Pro 256GB 100000 IOPS
A400 SSD 120GB (N/A) IOPS
Difference: 100000 (-100%)

Random Write

850 Pro 256GB 90000 IOPS
A400 SSD 120GB (N/A) IOPS
Difference: 90000 (-100%)

Sequential Read

850 Pro 256GB 550 MB/sec
A400 SSD 120GB 500 MB/sec
Difference: 50 (10%)

Sequential Write

850 Pro 256GB 520 MB/sec
A400 SSD 120GB 320 MB/sec
Difference: 200 (63%)


850 Pro 256GB 150 TB
A400 SSD 120GB 40 TB
Difference: 110 (275%)


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Model 850 Pro 256GB A400 SSD 120GB
Manufacturer Samsung Kingston
NAND Samsung 2nd Gen 86Gbit 40nm MLC V-NAND 3bit TLC NAND
Form Factor 2.5" 2.5" SATA III
Capacity 256 GB 128 GB
Cache 512 MB (N/A) MB
Sequential Read 550 MB/s 500 MB/s
Sequential Write 520 MB/s 320 MB/s
Random Read 100000 IOPS (N/A) IOPS
Random Write 90000 IOPS (N/A) IOPS
Interface SATA III 6Gb/s SATA III
Controller Samsung 3-core MEX controller Phison S11
Date Released 2014 2017
Endurance 150 TB 40 TB
Notes 10 years limited warranty AES 256-bit Full Disk Encryption (FDE) TCG/Opal v2.0, Encrypted Drive (IEEE1667) 3-Year Limited Warranty

Price Comparison

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850 Pro 256GB

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