| NengTyi NW6700 From All Angles |
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The Fan:
The impeller on
this Sunon fan is kind of interesting in that it employs a blade design I
haven't seen
before. The fan is pretty powerful, rotating on twin BB at about 5000 RPM perhaps. Air flow is good but unfortunately I don't have exact specs
to quote. Best of all the heatsink can basically accept any 70mm fan
for an easy upgrade path. |
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Side
A: The copper fins which measure 0.2mm thick taper down
at the center of the heatsink a few millimeters. The fan shroud hold
the 70mm fan in place and also creates a platform for the clips
to sit in on either side of the upper area. The central area
of the fins measures 70x70mm. |
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Side B:
With 33 fins each measuring 0.2mm
thick the surface area on the heatsink is pretty good. Fin spacing sits
squarely at 2mm and the exhaust area on either side of the heatsink is essentially 24mm high
at its lowest point. The copper base is 5mm thick, and plenty heavy. Each fin has
a crescent shape stamped into it to produce some turbulence in the air as
it moves over the thin metal surface. The raised portion is 10mm taller than the
rest of the heatsink. |
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Side B:
The small raised
area is probably just for
logos, and its effect on the overall
cooling of the system is dubious. That the copper fan shroud is all copper
as well would have been more effective if the copper were soldered to the base where
it makes contact. As it stands it is just held in place
with two swaged bits of copper at either end. An aluminum shroud would lighten the heatsink
and probably not effect cooling that much if at
all. |
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Heatsink Base:
The base is less
then an ideal poster model but it is pretty flat. The cut out area is for
a thermal diode, and still has some
raised areas. I would spend about 10min with 600gt sandpaper and give
the NW6700 a better finish personally. Still, even in this shape it
produced some pretty good results with ceramic based thermal
compound.
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