The fans on that sink are fairly noiseless, as there is another sink that utilizes the 'blower' technology, however, that silver-based alluminum heatsink simply does not have enough surface area to be effective. That's like using a pre-P200 heatsink, and slapping silver to the base and low-noise fans together... you're still limited by your weakest part....
..much the debate about copper vs. alluminum, if a fancy collective use of silver-base with a high surface area of alluminum prongs, with a solid connection between the two metals, and a decent cfm fan, that would be the most feasible. But hybrids in practice, have shown not to be too fairly effective, as no one can get a good enough connection between the two different metals..
-Frank