The Glacialtech Igloo 5610 PWM is a compact LGA775 Intel
heatsink suitable for office work computers. It's 80mm fan is Pulse Width Modulation compliant, so Intel motherboards can direct it
to spin only as fast as required (from a low 800RPM to moderately
audible 3200RPM), thus keeping unnecessary noise
down. The Igloo 5610 PWM is comprised of two heatpipes, a small section
of extruded aluminum heatsink and a short array of aluminum
cooling fins. A very simple CPU cooler, and one that is priced in
the $10-$15 range making it cost effective for office PCs.
Glacialtech's Igloo 5610 PWM heatsink weighs just 373grams, and in
Frostytech's real world tests ranges from 45.4 to 59.5 dBA
in noise output. The heatsink stands 100mm tall, and ships with a
pre-applied patch of thermal compound on its base.
odd thing with the Glacialtech Igloo 5610 PWM heatsink is the manufacturer's
choice of using screw based clips. For a heatsink this lightweight, we would have expected the standard
Intel push-to-click plastic retention mechanisms used with the reference heatsinks. Instead with the
Igloo 5610 PWM we find four
captive screws and a metal motherboard support bracket which necessitates removing the board
from the PC chassis. For a heatsink that weighs 373grams,
that comes with pre-applied thermal compound, and that is best suited towards
generic office PCs, this isn't a smart choice.
system integrators, or industrial PC applications a screw based heatsink retention mechanism fits
the bill. Perhaps that is the intended application here... For
the time being, all Frostytech is interested in is how the Glacialtech Igloo 5610
PWM heatsink performs thermally. Let's begin the analysis.
Igloo 5610 PWM Heatsink
|Model No.: Igloo
aluminum fins, nickel-plated copper heatpipes and base|
|Fan Mfg: Power Logic
|Fan Spec: 800-3200RPM, 12V,
|Fan Dim: 20x80x80mm|
|Heatsink & Fan Dim:
|Weight: 373 grams|
Includes: Mounting clips, pre-applied thermal
Compatible with Sockets: 775
|Est. Pricing: $20USD
The Glacialtech Igloo 5610 PWM heatsink is a
pretty straightforward CPU cooler, but after removing the 80mm PWM fan we can
have a look at one of its more unique qualities - scalloped cooling fins. Seen
from the top down, the leading edge of each aluminum fin has a little wavy
pattern punched out of it. This helps break up laminar air flow and decrease
back pressure as the air exits the fan and proceeds through the array of
aluminum cooling fins which are press-fit around the heatpipes. The heatpipes
are soldered to the copper base, but not each individual aluminum
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!
|360° View - Glacialtech Igloo 5610 PWM Heatsink
Frostytech's test methodology is available
The 80x80x25mm fan rotates at a speed of 800-3200RPM
depending on the signal from the computer BIOS. The Glacialtech Igloo 5610 PWM heatsink's fan runs at
full speed when connected to a standard 3-pin motherboard fan
speed connector. The eleven-blade impeller doesn't have a wire fan grill
protecting it, so make sure errant wires are well clear of the blades.
Looking from the top down, the Glacialtech Igloo 5610 PWM
heatsink has a compact profile which measures just 64mm deep. The fan is attached to
the aluminum fan shroud which wraps around the top of the cooler to create a small
plenum in front of the raw aluminum fins.
the side we have a better idea of how simple the Glacialtech Igloo 5610 PWM
heatsink is. Two 6mm diameter heatpipes, a 61mm high section of aluminum
fins, a small extruded heatsink below this and the copper base. Each aluminum fin is 0.31mm thick and
spaced 1.2mm from the next. The fins are press-fit over the heatpipes, not soldered. Note
the white cups which hold each of the four mounting screws.
Heatsink Side B:
From the rear the Glacialtech Igloo
5610 PWM heatsink presents an unimpeded route for air to flow through.
The little extruded heatsink looks like something used on chipsets, it's
essentially 50 x 21.5 x 37mm in size and forms the base of the entire cooler. Square holes
are machined in its base for the heatpipes, and on top of
them is the copper base plate. Its fins are
0.75mm thick at the base, spaced 1.15mm apart.
The base of the Glacialtech Igloo 5610 PWM
heatsink consists of a small 34x32.75mm square of nickel plated copper
sheet metal. The base is only 2mm thick, but is soldered to the heatpipes and rest of the
heatsink chassis. The base has a smooth surface finish with a roughness of ~16 microinches or better. The
plate is very slightly domed in the center, but not enough to require lapping. The heatsink ships from
the factory with a pre-applied patch of thermal compound. Each for
the four mounting screws is held captive in the little white cup so they
won't fall out during the installation procedure.