Abstract: The AVC Z7U7408001 is an amazingly powerful heatsink, the name isn't
very consumer friendly, so bear with me as I get used to typing out a 10-digit product number...
Page: Examining the Heatsink
| AVC Z7U7408001
Heatsink From All Angles|
The AVC Z7U7408001
makes use of a plastic fan shroud to hold the fan in place, and
direct the air flow over both sets of fins. The fan spins at 5400RPM, and is
protected with a wire grill. The
3-pin power cable is supposed to be
160mm long, but for whatever reason, is just 75mm on the
unit we received. This is an unrealistic length of cable
for a fan.
The fan draws
air in and exhausts it over two sets of separate cooling fin. The
first is an extruded aluminum section which measures 37mm thick, 66mm
wide, and features fins 1.8mm thick, spaced 2mm apart. The base is comprised of two
parts over the processor, with a total thickness of 12mm. The copper plate
is just large enough to cover the Pentium 4 core, and is 4.5mm thick. Its
only purpose is to hold the heatpipes in place, and distribute heat evenly to
From the side, you can only really see the plastic fan shroud which holds the fan
to the rest of the heatsink. It locks into little tabs at the base
of the primary heatsink, and is better than the equivalent in aluminum because it won't rattle if there are any vibrations. The heatsink is ~83mm tall, making it a good choice for compact cases.
The twin 6mm diameter copper heatpipes are spaced
17mm apart, so they should actually sit directly above the core of the
Pentium4 when the heatsink is installed. After exiting
the extruded aluminum section, the fins make a 90 degree turn and transfer what heat
remains to 39 stacked, 0.3mm thick, Al-1050 aluminum fins. This set of fins receives a more even, and slow flow of air over its surface than the primary set. The fins are spaced 1.5mm apart.
The base of the AVC Z7U7408001 come with a
layer of pre-applied ShinEtsu G-751 thermal paste. To keep
results consistent, Frostytech removes all thermal pastes/compounds,
and applies CoolingFlow ceramic-based thermal compound for our tests.
ShinEtsu make good product, so end-users do not need to worry
about replacing this material with something else. The surface finish of
the copper base is pretty good, but there sign of some very slight
waviness (due to the heatpipes below). The surface texture is softly
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