The Scythe Mine Rev.B is a funny looking cooler, with a 100mm fan at the center and two separate columns of aluminum cooling fins on either side. Like the Asus Arctic Square Frostytech reviewed previously, this Scythe heatsink (model no. SCMN-1100) makes use of one large fan to pull air into the heatsink and then expel it. The aluminum fins have a shape oddly resembling the geometry of a stealth fighter, and that seems to work just as well at making the Scythe Mine Rev.B a very quiet heatsink under power. The fan rotates at a fixed speed of 1500 RPM, yet there are no thermal throttling or PWM speed controls.