I tried to oc my c2d but it did not work very well so i ran it at 1.86ghz. Right now in those pictuers its a pentium 4. I have oc'd the pentium 4 to 3.2ghz before and it was kinda stable.
you really should not expect anything. If you ecs motherboard is stable as it is then you are lucky. I have had several ecs motherboards and they either die fast, are not stable, or audio and usb etc. dies.