Try the highest voltage to the DIMM on that board (2.9 volts?). It should be able to do DDR400, 2-2-2-5. I know on an IT7, you might have problems, as I couldn't do more than 188 fsb at 2-2-2-5 with Corsair XMS3500, which has the same 5-ns Winbond chips. But it ran relaxed timings real well (like DDR456, 2-3-3-7).