Good one BUT with Super-Pi 1M you just CAN'T SEE any differencies easy.....
For testing it......UNPLUG the one DDR2 module from it's slot and leave ONLY ONE module on......SINGLE CHANNEL...... Make your Super-Pi runs once more with ONLY ONE DDR2 module pluged and you will see that you will get ~same numbers.....

Try something else to compare.....A 32M for example.....