SilentX Power Supply & Energy Star compliant*
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 Why XPC 
 
 
 
 
 
 
 
 
 
 
 
       
 

Get the aluminum advantage
Shuttle XPC systems have always been famous for their quiet running. But now we've made our PCs even quieter with the new SilentX power supply.

SilentX originally debuted with the G4 Models, based on ATI's RADEON 9100 IGP chipset. The new power supply design is lighter than previous models yet increases the peak wattage to 450W in order to accommodate today's more demanding components. At the same time, we integrated two near-silent 40 mm fans into the power supply, one at each end to create a sort of pull-push airflow. Additionally, air vent design is newly optimized to prevent noise from air turbulence. The end result is a high-performance fan that outputs a mere 32 dB under a full system load. When running at a regular idle, the power supply is so quiet that you'll need to put your ear up to it in order to make sure that the fans are working!

SilentX power supplies are also updated to accommodate the latest device needs, such as dedicated 12V power and a SATA power connector for the latest hard drives. The design has proven so popular with existing XPC users that we've made the SilentX power supply available as a stand-alone upgrade for over a dozen models dating all the way back to the SS40G.
 
 
80 PLUS® Certified Power Supply*
The 80 PLUS ® performance specification is a standard which requires power supplies in computers and servers to be 80% or greater energy-efficient. This makes an 80 PLUS® certified power supply at least 33% more efficient than current power supplies.
 
What are the benefits of an 80% efficient power supply?
The 80% efficient power supply offers a range of potential rewards which benefit you financially while helping the environment by reducing power consumption:
 
   •   Increased power supply reliability due to greater efficiency
   •   Decreased system maintenance due to increased reliability
   •   Lower TCO due to reduced maintenance and longer equipment life
   •   Improved worker environment with less noise from the PC
   •   Potential reduction in cooling bill due to less heat being generated by PCs
How is an 80% efficient power supply different from a traditional power supply?
An 80% efficient power supply is at least 80% efficient at 20%, 50%, and 100% loads whereas current power supplies range from 65-75% efficiency.
 
80% efficient power supplies are designed with active power factor correction (PFC). Active power factor correction uses an active circuit to help current and voltage correlate with each other. When this happens, apparent power and real power approach each other. Apparent power is the current drawn by a system, whereas real power is the current actually available for use by the system. If they are equal, then the power factor is 1.
 
A .9 PFC means that 90% of apparent power is actually transferred to available real power. Power supplies that aren't power factor corrected tend to cause unpleasant variations in AC voltage that can affect or even damage other equipment on the same circuit.
 
 
*On selected XPC models only