Intel D3-S4520 vs OWC Mercury Electra 6G

vs
Intel D3-S4520 OWC Mercury Electra 6G
2.5-Inch
Form
2.5-Inch
SATA III
Interface
SATA III
960
Storage
1000
550
Seq. Read Speed
540
90
Rand. Read Speed
100
43
Rand. Write Speed
90
510
Seq. Write Speed
500
about