XFX ProSeries 850W Black Edition Review & Specs

XFX ProSeries 850W Black Edition 80 PLUS Bronze Modular P1-850B-BEFX

XFX ProSeries 850W Black Edition 80 PLUS Bronze Modular P1-850B-BEFX


Unique, continuous EasyRail™ technology enables you to maximize available power and make set-up easy. Stack numerous power-hungry components without fear of crashing. It's also a perfect solution for hardcore gamers.

Compatible with Intel Core i3, i5, i7 and AMD Phenom, FX
DC to DC Converter Design
Conductive Polymer Aluminum Solid Electrolytic Capacitors
Active Power Factor Correction [99% PF Typical]
High +12V Output
Ultra Ventilation [Grid Structure]
Multi-GPU Technologies Supported
All-in-One DC Cabling Design
Universal AC Input [Full Range]
5 Year Limited Warranty

Specs Overview

Model P1-850B-BEFX
Release Date June 2013

* First availability for purchase, it may not correspond to the actual market launch date.

Wattage 850W
Type ATX12V / EPS12V
Modular Full
Efficiency 80+ Gold
Output +3.3V@25A, +5V@25A, +12V@70A, -12V@0.8A, +5VSB@3A
PCI-Express 6+2 Pin Connectors 6
CPU/EPS Connectors 2
SATA Connectors 10
Molex Connectors 5

Score Pangoly


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* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.

Critic Reviews


The XFX ATX Black Edition 850W is particularly aimed at enthusiast gamers. It can deliver power to a range of system components including mid- to high-performance PCI Express graphics cards. In specific tests, the XFX Black Edition achieved 100 per...


A quality PSU is an absolute must-have requirement for a high-quality system. You may change a hard-drive in six months and the CPU after a year, but a decent PSU should last many years - delivering steady, smooth voltage with the minimum of...


If you can excuse the slightly distasteful pun, XFX have entered the PSU market with a bang! During the traditional load tests the unit performed excellently, managing between 88-90% efficiency with extremely tight voltage regulation that stayed...


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+12V Rail Outputs : Single

ATX12V 2.2 & ESP12V 2.91 Compliant : Yes

Maximum Wattage (W) : 850

Performance Category : Enthusiast

UPC Number : 778656058811



CrossFire Ready : Yes

SLI Ready : Yes


Ratings & Efficiencies

AC Input Current (Arms) : 11A - 5.5A

AC Input Frequency (Hz) : 50/60 Hz

AC Input Voltage (Vac) : 100 - 240

Active Power Factor Correction (PFC) : >0.95 at full load

DC Output Voltage Regulation : ±3%


Other Features

DC to DC Converters (+3.3 & +5V) : Yes

EZ Grip Connectors : Yes

High Reliable 105°C Japanese Capacitors : Yes

Solid State Capacitors : Yes


Load Range

+12V1 (mW) : TBA

Max -12V Output Current (A) : 0.8

Max -12V Power (W) : 6

Max +12V1 Output Current (A) : 70

Max +12V1 Power (W) : 840

Max +3.3V & +5V Combined Power (W) : 125

Max +3.3V Output Current (A) : 25

Max +5V Output Current (A) : 25

Max +5VSB Output Current (A) : 3

Max +5VSB Power (W) : 15

Max. +3.3V & +5V combined power (W) : 125

Wattage(W) : 850W


Cable Connectors

Modular 6+2-pin PCI-E : 6

Modular ATX12V / EPS12V : One 4+4-pin, One EPS 12V 8-pin

Modular FDD : 1

Modular Motherboard Connector : 20+4 pin

Modular Peripheral : Up to 5

Modular SATA : Up to 10


Safety & Protection

Over Current Protection (OCP) : Yes

Over Power Protection (OPP) : Yes

Over Temperature Protection : Yes

Over Voltage Protection (OVP) : Yes

Short Circuit Protection (SCP) : Yes

Under Voltage Protection (UVP) : Yes



Cooling Fan Size (mm) : 120

Intake Fan: Airflow (CFM/min) : 80.5

Intake Fan: Diameter (mm) : 120 x 120 x 25 mm

Master Carton Dimensions (cm) : 43.0 x 29.5 x 34.0

Master Carton Dimensions (inch) : 16.93 x 11.6 x 13.39

Master Carton Weight (Kg) : 11.72 est.

Master Carton Weight (lb) : 25.84 est.

Package Dimensions (cm) : 31.9 x 21.0 x 16.3

Package Dimensions (inch) : 12.55 x 8.26 x 6.42

Package Weight (Kg) : 2.76 est.

Package Weight (lb) : 6.08 est.

PSU Dimension (cm) : 8.6 x 14.0 x 16.0

PSU Dimension (inch) : 3.4 x 5.5 x 6.3

Units per Carton : 4


Certifications & Standards

C-tick : Yes

CB : Yes

TUV : Yes

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