Underclock the core down to about 1100.
Mem on the high end is 2125, low end 1950.
This is with modded memory straps, you will not hit 2125 without them, just increase it as much as you can.
source: own 100+ of these.
Not that easy... depends on timing strap you are using. OC the memory to the max, but check for the memory errors.