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Although the CPU fan is a relatively large 92 mm model, the heatsink
itself is relatively compact. The air flows downwards from the
top blowhole across a body of tightly spaced fins. Three heatpipes help distribute
the heat quickly and evenly across all the fins. It
appears to be a capable cooler given enough airflow. However, the close spacing
of the fins does not suit the low airflow that is best for
The included fan is quite unusual. Although the diameter of the
blades is 92 mm, the mounting holes are positioned 80 mm apart on a round frame. If the fan was
removed, it would have to be replaced by a standard 80 mm fan.
The CPU duct is attached to the fan
The heatsink is shipped with a heatpad already in place, which should make
things a bit simpler for first-time users.
A heatpad is used instead of thermal interface material.
The standard Intel 775 socket HS mounting system is used.
Rather than clipping or screwing the heatsink into a retention module that is
already installed on the motherboard, four plastic pins secure the heatsink
directly to the motherboard. Each pin consists of two parts: A hollow "catch
pin" and an outer "locking pin". Installation consists of inserting
the base of each catch pin through the motherboard while the locking pins are
not under tension. Once the catch pins are all in place, the locking pins are
pressed down to put the heatsink under tension. Removing the heatsink is as
simple as turning the locking pins a quarter turn and pulling up to remove the
Installation was no easier than with a socket 478.
The problem is trying to align and insert all of the catch pins through the
motherboard without accidentally locking them before they're in place. Trial
and error showed that the easiest method was to use the weight of the heatsink
to push the pins through the motherboard by tilting it towards each corner in
turn. Once the pins were in place, it was simple enough to finish the installation
by pressing down the locking pins.
Plastic pins are used to secure the heatsink to the motherboard.
The power supply is manufactured by Enhance
Electronics. Enhance classifies it as a FlexATX power supply. It
probably complies with the 1U form factor that is used in rack-mounted server
systems. Many other SFF systems (including a number from Shuttle) use thin-profile power supplies of this type.
Apart from the ATX and auxiliary power connectors that are pre-installed,
there are two main cable sets: One with two SATA connectors and one with two
4-pin Molex connectors and a floppy connector. In theory, this should support
almost any configuration of drives, but position of the connectors on each cable
can be problematic if both the optical drive and the hard drive require the same kind
of connector. It's probably safest to use SATA for the hard drive and PATA for
the optical drive so that each device has its own cable.
Specifications for Enhance Electronics ENP-2525A PSU
115-230V / 3-5A / 50-60 Hz
It may be possible to overload the power supply if a high-powered CPU and VGA
card are used together. In theory, the 115W TDP of the hottest P4 processors
in combination with the 75W maximum that is specified for the PCI-express slot
could draw up to 190W on the 12V line, leaving little headroom for the motherboard
or drives. Most users, however, will find this limitation purely theoretical.
In practice, it only means that the Kloss should not be "turbocharged"
with top-of-the-line gaming components.
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