I've been wondering the same thing... I have one and dropped a Corsair Force GT 240gb in it and I can only get about 260 each way.

I have tried different combinations of drivers and the Intel RST software to no avail.

I know the chipset supports sata III, but I don't think it's enabled.

hello

I resolved by updating the bios to version A00, and now I have the SATA 3 active and my sata ssd (crucial M4 128Gb) working properly at full speed.

I found the answer to my own question. I am downloading the A00 bios to see if that fixes the problem

where did you get the 00 bios? i can only see the updated 02 bios

Still not seeing the faster speeds. Getting 265 tops

www.dell.com/.../DriverDetails

I did download and revert back to this bios version A00, however it did not fix the issue. This laptop should support Sata III, the hardware is there. I saw the 15z which has the same hardware working with a sata III drive. It was getting the full 550+ transfer speeds. I am disappointed because I bought a sata III drive after seeing the 15z work, now I cant even use it to its full potential.

bios A02

http://img694.imageshack.us/img694/2546/ssdbiosa02.png

bios A00

http://img17.imageshack.us/img17/8305/ssdbiosa00.png

Just hooked up to a desk top and the drive tested at 580

What the heck is going on then. I have tried A00 and A02 and i can only get to 280 highest