A technique, as well as select implementations thereof, pertaining to dynamic adjustment of speed of memory is described. The technique may involve obtaining information indicative of memory transactions associated with a memory device from an external memory interface coupled to the memory device. The technique may also involve determining a runtime bandwidth of the memory device according to the memory transactions. The technique may further involve comparing the runtime bandwidth of the memory device to at least one threshold bandwidth. The technique may additionally involve adjusting the speed of the memory device according to a result of the comparing.