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Antec Signature 850W Review

paulktreg    -   September 18, 2008
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Specification:

 

 

 

 

 

 

 

 

 

Input
100VAC-240VAC | 13A-6.5A | 47Hz – 63Hz
Voltage
3V3
5V0
12V1
12V2
12V3
12V4
-12V
5VSB
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
50
50
120
120
120
120
120
50
Combined Max
160W
780W
N/A
N/A
Total Power
850W Continuous @ 50°C

 

Note: The maximum output power given in the manual is 850W. The specification label on the side of the power supply also states a 829W maximum for combined 3V3, 5V and the four 12V rails. I have a fixed 15.5W load on the 5VSB and -12V rails which effectively gives me a maximum of 844.5W for the Antec Signature. This is the figure I will base my tests on.

 

System Protection

There are no specific figures given for the protection circuitry. The following information is given in the user manual:

"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."

If you refer to the test certificate on the first page we are given written "proof" that all these safety features have been tested and passed by T. Xiong before the PSU is released.

 

Power Supply Weight
Manufacturer/Model
Weight

Antec Signature 850W

2.78kg
6.14lbs

 

 

Antec Signature 850W Connectors
20+4 Pin Motherboard
Hard Wired
1
PCI-E 6+2 Pin
Hard Wired
2
EPS12V 8 Pin
Hard Wired
1
P4-12V 4 Pin
Hard Wired
1
Molex 4 Pin
Hard Wired
3
SATA Power
Hard Wired
3
FDD 4 Pin Power
Hard Wired
1
PCI-E 6 Pin
Modular
2
Molex 4 Pin
Modular
6
SATA Power
Modular
6

 

 

Features:

Unlike the other power supplies I have tested I cannot find a definitive list of features in the accompanying literature. The list of features below is taken from the Antec website.

  • SLI certified. (2 X Geforce 9800 GX2)
  • DC to DC regulator modules.
  • 80 Plus Bronze certified.
  • 80mm fan utilising pulse width modulation for quieter operation.
  • Advanced hybrid cable management.
  • Dual density PC board layout.
  • High quality Japanese fan and capacitors.
  • Industrial grade protection circuitry.
  • Universal input and active PFC.
  • Unit dimensions 11.8"(29.98cm) X 8.8"(22.35cm) X 6.4" (16.26cm)
  • AQ5 (Antec five year parts and labour warranty)

 




  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specifications & Features
  4. Testing: Load Testing at 110VAC & 230VAC
  5. Testing: Efficiency & Power Factor
  6. Testing: Temperature, Noise Levels & Fan Speeds
  7. Conclusion
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