1
Antec Signature Series
SG-650 and SG-850 Power Supply
A New Level of Quality
The Signature Series is Antec’s premium line of high-end performance power supplies.
Combining cutting-edge technology, rigid testing, and impeccable style, the Signature
series is the ultimate choice in power supplies. Some of the design features in this
premium quality PSU have never been seen before in a consumer power supply.
Every Signature series power supply has been personally tested by our engineers,
and comes with a signed document guaranteeing its quality performance.
Standards and Features
The Signature Series Power Supply Unit (PSU) is compatible with ATX12V v2.3 and
EPS12V v2.91 specifications. The Signature PSU features Universal Input, which
automatically senses when you connect the power supply to any AC power source
between 100~240V without having to worry about setting a voltage switch.
This power supply also features Active PFC, which improves the power factor value of
the power supply by altering the input current wave shape and thus helps transmission
across the power grid.
Components and Design
Antec has selected only the best quality Japanese capacitors enhancing the unit’s
stability and increasing the MTBF of the Signature. The component choice has been
expanded by the use of two double-layer circuit boards, which allow for heavier-duty
components and more space between them for better airflow. The fan is a top-quality
Japanese made PWM fan.
DC to DC
The Signature uses DC-to-DC conversion for the 5V and 3.3V rails. The DC-to-DC Voltage
Regulation module is the most advanced design, usually found on high-end motherboards,
to step down DC voltage. This module operates at 85% efficiency, as opposed to a
traditional Magnetic Amplifiers that only operate at 75% efficiency. Another benefit is
that the transient response time is almost 100 times faster, to provide unbeatably stable
power output in response to changing loads.