Compare any two Solid State Drives:


ADATA Ultimate SU720 500GB vs SanDisk X400 256GB

Display Graphs

Hide Graphs

Specification Charts


Ultimate SU720 500GB 512 GB
X400 256GB 256 GB
Difference: 256 (100%)

Random Read

X400 256GB 93500 IOPS
Ultimate SU720 500GB 50000 IOPS
Difference: 43500 (87%)

Random Write

Ultimate SU720 500GB 65000 IOPS
X400 256GB 60000 IOPS
Difference: 5000 (8%)

Sequential Read

X400 256GB 540 MB/sec
Ultimate SU720 500GB 520 MB/sec
Difference: 20 (4%)

Sequential Write

X400 256GB 520 MB/sec
Ultimate SU720 500GB 450 MB/sec
Difference: 70 (16%)


Ultimate SU720 500GB 100 TB
X400 256GB 80 TB
Difference: 20 (25%)


Display Specifications

Hide Specifications

Model Ultimate SU720 500GB X400 256GB
Manufacturer ADATA SanDisk
Form Factor 2.5" SATA III 2.5"
Capacity 512 GB 256 GB
Cache N/A MB (N/A) MB
Sequential Read 520 MB/s 540 MB/s
Sequential Write 450 MB/s 520 MB/s
Random Read 50000 IOPS 93500 IOPS
Random Write 65000 IOPS 60000 IOPS
Interface SATA III SATA III 6Gb/s
Controller Unknown Marvell 88SS1074
Date Released 2020 2016
Endurance 100 TB 80 TB
Notes 3-Year Warranty Warranty 5 years

Price Comparison

Display Prices

Hide Prices

Ultimate SU720 500GB

Check prices at:

X400 256GB

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.