Mounted to cool a 3570 coupled i5 has a Noctua NF-15 PWM in a storm a + box. Easy installation fits perfectly into my tower heatsink is not very high but does not bother the memory modules that have not oversized sink. The weight is reasonable quality is the rendezvous for the price fortunately. Performance level with noctua I do not exceed 850 r / min therefore it is inaudible playing in the tower exactly what I wanted the performance in silence. Attention has been paired with a fan with great pressure as he needs it! So do not hesitate to put some money also in the fan. Then the price-performance ratio there is probably better on.