Dell Precision T7500 SAS controller support for 6.0Gb/s SSD drives

Hi, I have a dell precision workstations T7500 and have just purchased a SSD.  The SSD documents state to fully benefit from the speed of the SSD I need SATA III 6.0Gb/s. 

Does anyone know if my workstation motherboard supports SATA III 6.0Gb/s?

I know the Integrated LSI 1068e SAS/SATA is 3.0Gb/s speed and i'm lead to belive the optional PERC 6/i PCI-e SAS/SATA/SSD controller is also 3.0Gb/s.

I am suprised to find there is only one RAID card supported on this dell precision, and that my super powerful dell workstation is limited to the 3.0Gb/s speed.