| Arkua 8568 Heatsink From
All Angles |
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The Fans:
The fan assembly consists of the fan, and the mechanism used to hold the
heatsink and fan in place on the motherboard. The 8568 uses a 4500RPM 70mm fan
that produces about 54 dB of noise. The fan connects to
the motherboard fan header via a 3-pin connector which also supports RPM monitoring. |
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Bare Heatsink:
The
core of the 8568 is actually cut away a bit so that
the copper slug is less than the full height of the heatsink. The plastic fan mounting
assembly contains all the necessary springs to hold the heatsink under tension on the socket. The clip force is
centered on the copper slug at the center of the heatsink. Each
of the aluminum fins is scalloped to ensure good surface turbulence, and improved heat transfer. Fins
are spaced 2-2.5mm apart and are typically 1mm thick. |
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Side A:
The little plastic clips grab a hold of the motherboard HSRM and then a tension bar is locked into place. The entire
process requires no tools, but it can be a bit tricky to get all the clips
to grab hold properly. |
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Side B:
From this side you can see the little armature which
is used to put the entire assembly under
tension. In the down (locked) position shown here
the heatsink is under pressure, during installation
it should be in the up position. The 36mm tall fins are spaced about
2.5mm apart and are slightly tapered off to the corners. |
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Heatsink Base:
Marvel in its glory for this is the base of the Arkua 8568. The star pattern fin
design works efficiently to move heat away from the processor as downward exhaust
air keeps everything cool. The base is machined perfectly flat and is
very smooth, though not polished. A little bit of thermal compound
is recommended. The copper core is 24mm in diameter so the Pentium
4 heatspreader will overlap and also make contact with the aluminum.
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