Zalman Reserator 2
 

35C difference between the default air-cooler and the Reserator 2!! Big difference seen here. Acoustic-wise, the GPU Air cooler spins up and makes quite a fair bit of whirring sound, on top of the CPU fan cooler. Reserator 2 silent as always. We see a larger benefit on the GPU compared to the CPU, but the Zalman Reserator offers a significant improvement in temperature naturally, achieved with minimum zero noise.