In this paper we show that computer usage not only improves the reproducibility of the mixing cycle, but also by monitoring the rotor speed and the thermal exchanges, the mixing becomes more consistent. For an EPDM with a bimodal molecular weight distribution, a high green strength and a fast carbon black dispersion, we have used advanced control of the mixing energy to show how the batch to batch reproducibility of a 70 Shore A compound is improved. It results in reducing the compound Mooney viscosity variation to less than that of the EPDM raw material. Therefore a tighter control of the rheology of the different mixed batches is obtained. This leads to better productivity by more consistent extrusion and lower scrap level.