|360° View - Arctic Cooling Alpine
Information on Frostytech's test
methodology is available
||The Heatsink Fan: |
The fan is probably the
most important aspect of the Arctic Cooling Alpine 64. It is supported by
four posts which connect to the motor body. The 7-bladed impeller spins
freely, and utilizes AC's Fluid Dynamic bearings. Fan speed sits at
2000RPM, and so airflow is consequently 36 CFM. The fan draws power from
a standard 3-pin motherboard connector that supports RPM monitoring. On a
further note, the fan blades have a glossy surface finish which is
The 27 extruded aluminum fins measure roughly 42 x 98mm in size. Each fin is 0.9mm thick and spaced 2.0mm apart. This is a fairly open fin-pitch, but the reduced air resistance allows lower fan speeds to be utilized.
Heatsink Side A:
The 90mm fan intakes air, and blows it down into the aluminum fins. The warm exhaust air then exits at either side of the heatsink, where it can go on to cool northbridge chipsets, or adjacent power circuitry. The heatsink retention mechanism is dead simple, applying clamping pressure at either side of the Alpine64 heatsink. Arctic Cooling have done a good job designing the Alpine 64 for cost and cooling functionality.
Heatsink Side B:
There is a 15mm overhang on either side of the Alpine 64 for
capacitor clearance. The stainless steel clips are each held in place
with a single screw, so we'd advise torquing it down tight when you install this
heatsink. The sides of the heatsink have also been sanded for some
reason or another, given that this is an extruded heatsink
this step is not really necessary.
effective base area of the AC Alpine64 heatsink is 53mm x
64mm in size, it has a linear sanded finish and comes with a pre-applied
patch of grey MX-1 thermal compound. The aluminum is pretty flat and
surface roughness is about ~63 microinches. Arctic Cooling insist the
surface finish here is intentional.