Sata III Controller faster than SATA II on motherboard ?

[Dzenan Aljukic]

So the question is simple and please answer directly and understandful.
I have a 2TB EZRX (Western Digital Green), i know the green one is not recommended for system and 99% people would recommend a SSD but thats a topic for itself.

Will, and if yes how much faster would my HDD run (how much would it improve the read and write speed) if i have currently the hdd connected to the sata 2 slot on the MOBO (AsRock H61M-VG3). So if I buy a controller on the pcie x1 slot with sata 3 would it run any faster ?

 

[AppleGwava]

It wouldnt improve anything.It is still constrained by the physical read write of the hdd.Basically its like sales,it is the lower of the two

 

[Dzenan Aljukic]

It wouldnt improve anything.It is still constrained by the physical read write of the hdd.Basically its like sales,it is the lower of the two

I would mentoin that the HDD is Sata 3, and probably can't get everything out of it because its connected on sata 2 ? so thats the reason i wanted to get a controller with sata 3 ?
So it's not worth it ?

 

[CountMike]

No it's not worth it, it won't be any faster, it's mechanical part of it that is bottleneck to say nothing about it already being slow by design. Green is meant to save power not for speed.

 

[Paperdoc]

In fact, the "green" part is not even a factor. Although those drives are a bit slower in performance than "black" drives, for example, the truth us that there are NO mechanical hard drives (i.e., ones with spinning disks and moving heads) that can even get up to the data transfer speed limits of the SATA II (now called SATA 3.0 Gb/s) standard. Both the 3.0 and 6.0 Gb/s communications rates are faster than the rate the data can be delivered by the mechanical limits of the drive mechanism. That way the communications subsystem is never a limit on drive performance.

As CountMike said, you would get no benefit. Even if you had a faster mechanical HDD, you still would not get any performance boost from a SATA 6.0 Gb/s controller board. The only devices that can benefit from that upgrade are the SSD's that have no mechanical moving components and hence can move data much faster.