In this review Frostytech is testing Scythe's Grand Kama Cross heatsink, the supped-up successor to the Kama Cross. This time around Scythe have sized it up by selecting a 140mm PWM fan that spins at 500-1300RPM, instead of the standard 120mm size. The Grand Kama Cross is a quiet all-around heatsink, at most producing 45.9 dBA noise and at best a nearly inaudible 29.8 dBA in our real-world tests.