if you're looking at warranty of 5 years or relatively better performance, go for intel 530. if your budget is tight, sandisk looks viable. (unless there are some reasons behind, sandisk's price is a steal if you asked me)

if you're looking at warranty of 5 years or relatively better performance, go for intel 530. if your budget is tight, sandisk looks viable. (unless there are some reasons behind, sandisk's price is a steal if you asked me)

in terms of performance (which most of us translate to speed and iops), yes it's true, you can say samsung 840 evo hands down intel 530. (the samsung drive also include ram-based enhancement, RAPID mode, and when enabled i think none of the sata-based ssd's can beat that).

previously i compared the three ssd's that you have listed. intel 530 was a relatively better option. but if you included samsung 840 evo, then i will choose the samsung drive.

Intel use SandForce 2281 controller, which incompressible data might affect the SSD performance(reduced write and read speed.) There're plenty of cheap SSD use SandForce 2281 if i recall correctly.
while the other use either Marvel or Samsung controller didn't affect much.