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XFX XPS-850W Power Supply Review

paulktreg    -   September 14, 2009
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Specification:

Ratings Table:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XFX 850W Specifications (Model: XPS-850W-BES)
AC Input
90-264VAC     12A     47-63Hz
DC Output
+3V3
+5V
+12V
-12V
+5VSB
Maximum Load
24A
30A
70A
0.8A
3A
Maximum Combined Wattage
150W
840W
9.6W
15W
850W

 

System Protection:

Total Power Protection (OPP)

Total power 135% maximum with shutdown and latch off protection.

Over Voltage Protection (OVP)

 

Output
Active Range
Result
 
Min
Max
+3V3
3.76V
4.30V
Shutdown & Latch Off
+5V0
5.74V
7.00V
The Group 1 DC Output
+12V
13.4V
15.6V

 

Short Circuit Protection (OCP)

A short between ground and any group 1 output will shutdown all of group 1.

A short between ground and group 2 will shutdown both group 1 and group 2.

(Group 1 is everything but the +5VSB rail and Group 2 is the +5VSB. Short the +5VSB rail and the complete power supply is shut down, short any of the other rails and the +5VSB remains live.)

Reset After Shutdown

Whenever the power supply latches into the shutdown state due to a fault condition on any output, the power supply will return to normal operation only after the fault has been removed and the power switch cycled off/on with a minimum off time of 20mS.

 

Safety & Agency Approvals:

EMC

Complies to EN61204-3:2000, FCC Part 15 & Part 2 (CISPR 22 Class B), GB9254-1998 AGB17625.1:2003 standards.

Safety

Conforms to IEC60950-1:2000, EN60950-1:2001, UL60950-1 1st, GB4943-2001 standard: CB, TUV, CUL (Level 6), CE.

 

Power Supply Weight:

 

Power Supply Weight
Manufacturer/Model
Weight
XFX Black Edition 850W
2.8kg
6.2lbs

 

Power Supply Connectors:

 

XFX 850W Connectors
20+4-Pin Motherboard
Captive
1
EPS12V 8-Pin
Captive
1
ATX12V 4+4-Pin
Captive
1
PCI-E 6+2-Pin
Captive
2
PCI-E 6+2-Pin
Modular
2
SATA Power
Modular
11
Peripheral 4-Pin
Modular
8
FDD
Adapter
2

 

Power Supply Cable Lengths:

 

XFX 850W Connector Cable Lengths
Captive
PSU > 22” > 20+4-Pin Motherboard
1
Captive
PSU > 22” > 8-Pin EPS12V
1
Captive
PSU > 22” > 4+4-Pin ATX12V
1
Captive
PSU > 22” > PCI-E 6+2-Pin
2
Modular
PSU > 14” > Peripheral > 6” > Peripheral
1
Modular
PSU > 18” > Peripheral > 6” > Peripheral > 6” > Peripheral
1
Modular
PSU > 22” > Peripheral > 6” > Peripheral > 6” > Peripheral
1
Modular
PSU > 14” > SATA > 6” > SATA
1
Modular
PSU > 18” > SATA > 6” > SATA > 6” > SATA
2
Modular
PSU > 22” > SATA > 6” > SATA > 6” > SATA
1
Modular
PSU > 22” > PCI-E 6+2-Pin
2
Adapter
Peripheral > 6” >  2 x FDD
1

 

Features:

 

  • 850W of continuous power at 50°C
  • Detachable modular cables
  • High-quality Japanese brand capacitors (105°C)
  • Tight voltage regulation (±3%)
  • High efficiency operation up to 88% (80 Plus Silver)
  • Single, high power +12V rail (up to 70A/840W)
  • DC to DC Voltage Regulator Modules for +3V3 and +5V0 rails
  • Solid polymer caps provide enhanced reliability and stability
  • Very quiet 135mm ball bearing fan provides superior cooling
  • Supports multiple high end graphic adapters (SLI & Crossfire)
  • 5 Year XFX limited warranty
  • MTBF 100,000 hours at 25°C
  • Dimensions: W5.9" x L6.7" x H3.4"



  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specification & Features
  4. Testing: DC Voltage Load Regulation at 110VAC & 230VAC
  5. Testing: Efficiency, Power Factor & DC Quality
  6. Testing: Temperature, Noise Level & Fan Speed
  7. Conclusion
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