Maximum speed of SATA III SSD?

[kiddingguy]

I was wondering what the maximum speeds are in read/write of a SATA III SSD?

Is that around 550MB/s (or can higher speeds be achieved in the near future)...

[spaceelf]

Technically you have to call it by the speed, not the generation, according to the SATA consortium...but anyway nevermind that

That sounds about right what with the protocol overhead. We're on the way to this in a few years though - http://www.bit-tech.net/news/hardware/2012/03/08/ssds-faster-sata-express/1

[Jason S. Global Moderator]

SATA3's specification allows for a theoretical throughput of 6Gbps, or 750MBps. if you take out the cost of overhead, you're probably limited to 600-625MB/s. So current SSDs wont get much faster.

If you remember last generation SSDs running on the SATA2 spec - they all topped out around 280MB/s max even though the SATA2 spec allows for a theoretical 375MB/s.

also, keep in mind that the 550MB/s that companies exploit are also max conditions under some certain benchmark. in real life, you may never see that number.

[kiddingguy]

Thx for the replies.

I have a SATA 6Gb/s mobo, so basically all SSD's with state the theoretical 550MB/s are pretty OK?

NB Excluding 'brand preference' :)

[Jason S. Global Moderator]

you'll want to make sure you attach the SSD to the SATA3 port(s) connected to the intel SATA controller. the other ports are usually Marvell, or the like, and are much slower. check the manual to see which ports are the intel's.

[+PeterUK MVC]

Going by this its max is 600MB/s which with overhead likely what your seeing 550MB/s

http://en.wikipedia....A_6_Gbit.2Fs.29