Transferred all my cool stuffs From my XPS 435mt to Precision T3500 And now freezing randomly -- is it the RAM?

Same x58 and LGA1366 -- I just needed some more room - have googled and googled and this is as close as I can get 

XPS 435mt I was successfully running my 24gb of ram and when I put it into the T3500 is recognized it perfectly - but if freezes yup frequently / randomly.

Kingston KHX1600C9D3X2K2/8GX which is 9-9-9-27 at 1.65V

And on the Crucial site it only says that this ram works --> 9-9-9-24 1.5V

Is this why my system is freezing up ?  There are post that talk about adjusting the ram timing would solve this -- but the Dell Bios a16 does not allow for that - correct?

Any help here is much appreciated -- I am on a tight budget and got the T3500 because I thought it was going to be an easy swap out of parts.

Thanks so much for any and all help!