The cast / metal injection moulded aluminum squirrel cage fan housing is painted matt-silver and looks almost like it is made from magnesium (it's not).

Intake air flows through the copper fins of the heatsink body before the squirrel cage fan draws it up through a 49mm diameter aperture in the black anodized aluminum fan shroud below. The shroud fits pretty tightly over the copper fins (the skived tips have been machined flat) so there is little space for air to circumvent moving through the copper cooling fins.

(looking at the underside of the fan and fan shroud)

Installation Hardware

Dynatron's G199 1U server heatsink includes a pre-applied patch of thermal compound and four spring-tensioned Intel socket LGA1366 mounting screws. The captive mounting hardware is shipped attached to the body of the heatsink, so the cooler need only be removed from its packaging and placed on the processor, then installed. A phillips or hex-head screw driver can be used to torque down the four mounting screws to firmly hold it in place.

FrostyTech's Test Methodologies are outlined in detail here if you care to know what equipment is used, and the parameters under which the tests are conducted. Now let's move forward and take a closer look at this heatsink, its acoustic characteristics, and of course its performance in the thermal tests!