Hey I am modding my shuttle fairly soon so I should be able to fit either one of these on my x800xt without any trouble. What I was wondering is, is there a big difference between the Zalman video card coolers and the ATI Silencer? I kind of like the way the Zalman looks more but if it is not going to allow me to overclock as well as the Silencer than I would prefer not to get it. Anyone know how these compare to one another?