SUPER pi get affected by RAM bandwidth also. i try my DDR400 RAM. i decrease the RAM speed to 176MHz(352MHz) and do the SUPER pi, i raise the speed tp 210Mhz(420Mhz) and do the calculation again. the processor speed is still the same. the result is that the higher RAM speed is 4 seconds faster than lower RAM speed. i try lower the processor clock speed (by 200Mhz), and raise the RAM speed to 466MHz, the result is the same as the 420Mhz RAM and 200Mhz faster processor speed.