Coolermaster's Hyper48 heatsink
is a little older among
the list of K8 / Pentium 4 compatible coolers on the market now,
but it's still a contender. The KHC-L91 Hyper48 comes with a collection of brackets
and mounting plates which enable its use on socket 478/775
Intel Pentium 4 and socket 754/939/940 AMD Athlon64 processors. That level of flexibility
is great for users who are on one CPU platform right
now, but looking to switch to a different CPU vendor in the near
future. We should note that AMD's Socket-AM2 is not compatible with this
heatsink.
The Coolermaster Hyper48's all copper
construction is augmented by four copper heatpipes that advance the flow of heat out
from the base to the upper tips of the cooling fins. As
we will
see shortly in the synthetic thermal test results, the heatpipes play an
important role.
Really though, the most notable
benefit of the Coolermaster Hyper48 heatsink is its quietness. The low noise output is
due to a specialized Delta fan which has side vents and a conservative impeller
speed. The 92x92x25mm Delta NFB0912L fan moves 42CFM
of air whilst generating just 29.1 dBA
noise, according to the mfgr's spec sheet. Curiously though, Coolermaster have listed
a fan speed of 1400RPM while Delta quote a 2100RPM value.... in either
case the KHC-L91 heatsink operates quietly in the real world. Our ears can
appreciate that.
Coolermaster KHC-L91 Hyper48
Heatsink
|
 | |
 |
| HEATSINK
SPECSHEET |
| Manufacturer: Coolermaster |
| Model No.: Hyper48 KHC-L91 |
| Materials: copper fins, base and
heatpipes. |
| Fan Mfg: Delta Electronics NFB0912L |
| Fan Spec: 1400RPM, 12V, 0.17A |
| Fan Dim: 25x92x92mm |
| Heatsink & Fan Dim: 105x94x70mm |
| Weight: 864 grams |
| Includes: Multi-socket back plates, K8 HSRM,
mounting hardware and clips, thermal compound |
Compatible with Sockets: 478/775/754/939/940 |
| Est. Pricing: $28USD
($32CDN) | |
The Coolermaster Hyper48 heatsink is flexible when it
comes to the different CPU heatsink retention methods of AMD and Intel. When it comes
to LGA775 Pentium 4 CPUs a special bracket screws into the copper base of
the heatsink which makes it possible mount the unit onto
these kinds of motherboards.
The other CPU types rely upon a hybrid K8/P4
heatsink retention frame. Given that we're dealing with a 864 gram copper
heatsink, whatever method applies to your computer it's important that the
Coolermaster Hyper48 stay firmly in place once installed!
The heatsinks' four copper
heatpipes run along the upper side of the copper base, and then intersect the
copper fins at the top right where cold air from the fan enters. To ensure a
good
thermal interface with as little thermal resistance between the joints as
possible, the two sections of copper fin and heatpipe are soldered together.
FrostyTech's new Test Methodology is 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 Coolermaster heatsink,
its acoustic characteristics, and of course it performance in the FrostyTech synthetic
thermal tests!
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