Sata 3, should i upgrade?

[jyeh]

Here are my current specs:

I7-920
Asus rampage II extreme
6 gb ddr3 1600 trip chan
OCZ 850 Watt PSU
XFX gtx 260 Black edition
WD Caviar 250GB 7200 RPM 16MB SATA 3.0Gb/s

I'm looking to upgrade or adding an additional hard drive. Probably looking at a SSD and using it as a boot, and using the old drive as storage. My question is that my current MOBO is only capable of 3.0gb/s and the one i'm getting is a 6.0gb/s. I was wondering how the 6.0gb/s SSD will perform on the 3.0gb/s setting. Or would it be more beneficial for me to upgrade the mobo all together?

Also are the newer SSD capable of actually using 6.0gb/s?

 

[WyomingKnott]

1) Any SATA device with any revision interface will run with any SATA controller with any revision interface. Max burst rate will be limited by the slower interface. But, even if the SSD will push over the limit of 3.0, you will still benefit from it over a hard drive. Don't forget to do all the things that will enable TRIM.

2) Very, very few very, very expensive ones are. Take a look at this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227600&cm_re=revo_ocz-_-20-227-600-_-Product
spec'ed at 540 MB/s read, it would need SATA 3 if it weren't for the fact that it plugs into the mobo.