SanDisk X400 vs WD Blue

vs
SanDisk X400 WD Blue
2.5-Inch
Form
2.5-Inch
SATA III
Interface
SATA III
512
Storage
1000
540
Seq. Read Speed
560
93.5
Rand. Read Speed
95
75
Rand. Write Speed
84
520
Seq. Write Speed
530
about