Bargain! They also say:
You may be fooled in thinking the that Zalman's latest incarnation of the Aero Flower is their smallest yet. But in fact it is actually taller than the CNPS9500 series. From a performance point of view the CNPS9300-AT is actually better than the CNPS9500 series. Zalman have confirmed that during their extensive testing the CNPS9300-AT out-performed the CNPS9500-AT by 1-2°C on a continued basis.