USER’S MANUAL
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.
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System Protection
A variety of industrial-grade safety circuitry will help protect your computer: OVP (Over
Voltage Protection), SCP (Short Circuit Protection), and OCP (Over Current Protection).
Sometimes the PSU will “latch” into a protected state. This means that you will need to
clear the fault and turn the power off to the PSU before it will function again. There are
no user-replaceable fuses in your Signature Series PSU.
Special Quiet Computing™ PWM fan operation
Another innovation in your Signature is the introduction of pulse width modulation
(PWM) fan technology. A PWM fan can spin much more slowly and be quieter than a
voltage-controlled fan. The Signature uses a Japanese PWM fan that can spin as slow as
400 RPM or as fast as 4000 RPM, depending on load and ambient temperature. It should
be nearly inaudible when your computer is idling, and the Signature will vary the fan
speed depending on the load of your computer.
80 PLUS® Bronze Certification
80 PLUS® Certification is the latest independent standard in power supply efficiency.
This means that the PSU will generate less heat so it stays cooler, runs more quietly,
and lasts longer. The Signature series exceeds the basic 80 PLUS® standard and lowers
your operating costs while protecting the environment.
SLI Certification
Signature power supplies have been SLI Certified by NVIDIA Corporation for use with
pairs of high-end graphics cards for superior parallel graphics processing.
Advanced Hybrid Cable Management System
The Signature Series uses Advanced Hybrid Cable Management. Cables that are important
or mandatory are connected directly to the PSU. There are also modular connectors on
the back of the PSU to add additional cables as needed. Using only the power cables
you need will reduce clutter and improve airflow inside your case. For the list of connected
and optional cables, see the following table.
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Table 1
Cable Quantity Power Connectors Part Name Description
24-pin (20+4) main
connector
4-Pin ATX 12V
8-pin EPS 12V
N/A
Power supply
Direct cabling
SG-650: 1 x 8-pin
(6+2) PCI-E
SG-850: 2 x 8-pin
(6+2) PCI-E
3 x Molex
+ 1 x Floppy
3 x SATA
2
2
SG-650 x 1 cable
SG-850 x 2 cable
Molex connector
w/ cable
Serial ATA
connector
w/ cable
PCI Express
connector
w/ cable
3
Includes three Molex
connectors
Includes three Serial
ATA connectors
Includes one PCI
Express connector
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Installation:
1
Install the Signature PSU into your case with the
four screws provided.
2
Connect the 24-pin Main Power Connector to your
motherboard. If your motherboard uses a 20-pin
connector, detach the 4-pin section on the 24-pin
connector.
Note: The detachable 4-pin section cannot be
used in place of a 4-pin +12V connector.
2
4
3a
3b
4 5
3
Connect the 8-pin or 4-pin connector for the CPU.
Note: Please also refer to your motherboard user guide for any special instructions.
Connect the cables from cable pack to the socket on the power supply as needed.
4
If you are going to plug additional PCI-E cables into the PSU, they should go into the
red sockets. If the red sockets are not being used for PCI-E, then they can be used
for any other type of cable supplied in the pack that accompanied the PSU.
5
Connect the AC power cord to the power supply AC inlet and turn the switch to the
“|” position.
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Output — SG-650
Voltage +3.3V +5V +12V1+12V2+12V3-12V +5VSB
Maximum Load 25A 25A 22A 22A 25A 0.5A 3A
Minimum Load 0A 0A 0A 0A 0A 0A 0A
Regulation ±3% ±3% ±3% ±3% ±3% ±7% ±3%
Ripple & Noise (mV) 50 50 120 120 120 120 50
Combined max. 140W 516W (43A) N/A N/A
Total Power 650W continuous output @ 50°C
Output — SG-850
Voltage
Maximum Load 25A 25A 22A 22A 25A 25A 0.5A 3A
Minimum Load 0A 0A 0A 0A 0A 0A 0A 0A
Regulation ±3% ±3% ±3% ±3% ±3% ±3% ±6% ±3%
Ripple & Noise (mV) 50 50 120 120 120 120 120 50
Combined max. 160W 780W (65A) N/A N/A
Total Power 850W continuous output @ 50°C
+3.3V +5V +12V1+12V2+12V3+12V4-12V +5VSB
Safety: UL/CUL, TUV, CE, CB, CCC, FCC Class B, C-Tick
Protections: Over Voltage Protection, Short Circuit Protection, Over Current Protection
MTBF: 100K Hours Min At Max. Load 230Vac And 25° Ambient Conditions.
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Antec, Inc.
47900 Fremont Blvd.
Fremont, CA 94538
USA
tel: 510-770-1200
fax: 510-770-1288
Antec Europe B.V.
Stuttgartstraat 12
3047 AS Rotterdam
The Netherlands
tel: +31 (0) 10 462-2060
fax: +31 (0) 10 437-1752
Customer Support:
US & Canada
1-800-22ANTEC
customersupport@antec.com
Europe
+31 (0) 10 462-2060
europe.techsupport@antec.com
www.antec.com
© Copyright 2008 Antec, Inc. All rights reserved.
All trademarks are the property of their respective owners. Reproduction in whole or in part without written permission is prohibited.
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