funny thing happened to CPUs recently, some of them got a lot more power efficient
and a lot cooler. A few AMD Athlon and Phenom processors are pushing out as little as 80W, others as little as 65W or even
45W! Die shrinks are making mainstream and entry level processors much more energy efficient, and
substantially more affordable too. If you've recently built a PC system with one
of these energy efficient CPUs, you might be able to get away with a compact, dead-simple
heatsink that doesn't cost a whole lot.
In other words, know your processor's TDP (Thermal Design Power) before going heatsink
shopping. If the heat output is little, a smaller and less performance oriented
heatsink just might do the job. Take for example the heatsink Frostytech is
testing today; the Glacialtech Igloo 7223 Light E.
The Igloo 7223 Light E is a fairly compact AMD
K8 heatsink, made just of extruded aluminum with a 70mm fan. The Glacialtech
Igloo 7223 Light E is rated for a maximum load of 80W, and is very
quiet. Glacialtech's Igloo 7223 Light E heatsink stands a squat
51mm tall and comes with a fixed speed
70mm fan that rotates at a quiet 2600RPM. Weighing in
at a feather 256grams, the Igloo 7223 Light E is compatible with AMD socket
754/939/940/AM2 processors of 80W TDP or less. Frostytech tested the
heatsink up to 125W, and the results weren't pretty.
|Glacialtech Igloo 7223 Light E
| Model No.: Igloo 7223 Light E|
Materials: extruded aluminum|
|Fan Mfg: Powerlogic PLA07015S12M|
|Fan Spec: 2600RPM, 12V, 0.10A|
|Fan Dim: 15x70x70mm|
|Heatsink & Fan Dim: 51x70x76mm |
|Weight: 256 grams|
Includes: thermal compound, instructions|
Compatible with Sockets: 754/939/940/AM2
|Est. Pricing: $20USD
There's not a lot else that needs to be
said about the Glacialtech Igloo 7223 Light E heatsink, other
than to reiterate that it's best suited to smaller enclosures where vertical height is restricted, and to energy
efficient processors that don't run very hot.
Base Finish and Flatness
Flipping a heatsink over to inspect the business
end is often a simple indicator of overall cooler quality. More practically
speaking, a heatsink is in many ways only as effective as the contact it makes
with the processor - the flatter and smoother the better. Base finish is one of
the criteria that Frostytech measure in the course of evaluating heatsinks, and
it involves two distinct aspects. Surface Finish is the first; this is
calculated with the aid of Surface Roughness Comparator that has a cross section
of common machine surface finishes and their numerical surface roughness
equivalents in microinches. The second is Surface Flatness. This is tested with
an engineers straight edge or proven flat surface, in two axis.
The base of
the Glacialtech Igloo 7223 Light E heatsink has
a surface roughness of ~32 microinches. The base is 76x60mm in size and generally
quite flat in both axis. A patch of good quality shin-etsu thermal compound is
pre-applied for easy installation.
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!