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The XPC P2 Series proudly wears
the Silent X technology logo. The Silent X concept is
embodied in a number of discreet Shuttle technologies,
including; A Silent X PSU, Integrated Cooling Engine
(ICE) and intelligently-engineered airflow mechanics. Integrated Cooling
Engine (ICE) Technology
The Integrated
Cooling Engine (ICE) included in the P2 Series has been
purpose designed for the P2-chassis. The Integrated
Cooling Engine uses convection cooling to transfer heat
away from the processor and other critical system
components. Copper tubing, coated in nickel and filled
with distilled water provide the conduit through which
heat the radiator, providing both processor cooling an
passes to a radiator. 
Improving on the standard ICE
module that ships with all G-series XPCs, the P-series
ICE module uses two fans in push-pull to more
efficiently pass cool air over the ICE radiators fins.
This makes it possible to deliver up to 50CFM. Further
both fans are PWM spec — which means linear control of
the fan speed — and controllable in BIOS.
Finally, those familiar with
the XPC will notice that the ICE module has moved to the
front of the case and the airflow has been redirected to
exhaust on the left side of the machine. A Fan duct
channels the intake airflow to ensure cool air is used
to cool the CPU and a foam duct on the case makes sure
the exhaust directly exits the case without warming
other components.
Air
Flow
The XPC P2 Series introduces a
revolutionary new approach to airflow design. Separating
the machine into 3 airflow zones:
- CPU
- HDD
- Case
The airflow in the P2-chassis shows several different
intake points designed to keep cool air continually
flowing over critical components as opposed to
recalculating warm stale air.
Finally, the underside of the P2-chassis has more air
intake points designed to keep the motherboard cool and
stable. The underside edge is lined with intake points.
Other intake points are also located on the underside of
the machine to improve motherboard cooling.
Smart Fan
The XPC P2 Series contains a total of 5-cooling
fans. These fans are located in airflow zones noted
below:
 Two 60mm fans cool the two hard drives
located at the top of the machine. These fans feature
4-pin headers, are PWM spec and feature linear control
via BIOS. These fans are designed to spin slowly at
about 1,000 rpm, enough to cool the HDD but not be
heard.
- Two BIOS controlled fans in push-pull cool the
CPU. Again these fans are PWM spec and designed to run
at low speeds.
- The final fan in the system is a 80mm fan located
inside the PSU. This fan serves to cool the chassis,
motherboard and PSU.
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