360° View - Glacialtech Igloo 5750 Silent Heatsink Information on Frostytech's test methodology is available here.
There are two 20x92x92mm fans on the Glacialtech Igloo 5057 Silent heatsink - each spins at a fixed pace of 1400RPM. Neither fan is PWM compliant or thermally responsive. Power is supplied to both fans via a single standard 3-pin motherboard fan header. The seven bladed impeller is not protected by a fan grill, so watch out for loose wires! With the upper fan removed we can see the four 6mm diameter heatpipes threading though the 40 or so 0.3mm thick aluminum fins. Each fin is spaced 1.5mm apart.
Standing about 122mm tall, the Igloo 5057 Silent heatsink conveniently uses tool-free Intel clips and easy to install AMD brackets. The Intel clips quickly lock into the PCB holes surrounding the LGA775 Intel processor socket, the AMD bracket requires a screwdriver. Notice the short 14mm tall fins of the extruded aluminum heatsink which forms the base cap of this heatsink. The heatpipes are soldered to this component, and the copper base below.
The Igloo 5057 Silent's two fans efficiently exhausts all air directly at the base heatsink below the main body of the cooler. The heatpipes are soldered to the base, but not to the aluminum fins. A patch of grey thermal compound is pre-applied by the manufacturer. The base measures 33x33mm in size, so it's a little undersized for AMD processors which have a 37.5mm square integrated heat spreader.