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Samsung 850 Pro 512GB vs SanDisk X400 1TB

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Specification Charts


X400 1TB 1024 GB
850 Pro 512GB 512 GB
Difference: 512 (100%)

Random Read

850 Pro 512GB 100000 IOPS
X400 1TB 95000 IOPS
Difference: 5000 (5%)

Random Write

850 Pro 512GB 90000 IOPS
X400 1TB 75000 IOPS
Difference: 15000 (20%)

Sequential Read

850 Pro 512GB 550 MB/sec
X400 1TB 545 MB/sec
Difference: 5 (1%)

Sequential Write

850 Pro 512GB 520 MB/sec
X400 1TB 520 MB/sec
Difference: 0 (0%)


X400 1TB 320 TB
850 Pro 512GB 300 TB
Difference: 20 (7%)


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Model 850 Pro 512GB X400 1TB
Manufacturer Samsung SanDisk
NAND Samsung 2nd Gen 86Gbit 40nm MLC V-NAND TLC NAND
Form Factor 2.5" 2.5"
Capacity 512 GB 1024 GB
Cache 512 MB (N/A) MB
Sequential Read 550 MB/s 545 MB/s
Sequential Write 520 MB/s 520 MB/s
Random Read 100000 IOPS 95000 IOPS
Random Write 90000 IOPS 75000 IOPS
Interface SATA III 6Gb/s SATA III 6Gb/s
Controller Samsung 3-core MEX controller Marvell 88SS1074
Date Released 2014 2016
Endurance 300 TB 320 TB
Notes 10 years limited warranty AES 256-bit Full Disk Encryption (FDE) TCG/Opal v2.0, Encrypted Drive (IEEE1667) Warranty 5 years

Price Comparison

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850 Pro 512GB

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X400 1TB

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