£20 off your order Instant finance available Trade in for up to £300 Cashback No Quibble Return Policy

XFX XTR Series P1 Black Edition 850W 80 Plus Gold Fully Modular Power Supply P1-850B-BEFX

Quickfind code: 828734

Was: £139.97     You save: £16
£123.97
or £6.01a month more info

See all delivery & collection options

We deliver 6 days a week from 7am - 8pm, including the option of next day and Saturday delivery on 1000’s of products. We offer a range of delivery services for you to choose from, with many allowing you to choose a delivery date. Most of our delivery partners give you delivery time slots on the day of delivery and the ability to track your order. You may also have the option to collect from our Huddersfield or East Midlands stores, or from thousands of nationwide CollectPlus collection points.

Simply enter your postcode below to see your delivery options:

Enter delivery postcode for options and prices:
click to close
Why buy me
  • Power Device / Power Provided - 850Watt
  • 80 PLUS certification - Gold
  • Form factor - Internal
  • Modularity - Fully Modular
  • Power Device Cooling System - 120mm fan
More Info » Tech Spec »
click
Valid promotions & discounts
Price match

If you have seen this product cheaper elsewhere you could take advantage of our Price Match Promise!. Give us a call on 0871 971 0005 and we will try and price match where possible! Terms & Conditions apply.

click
Ways to pay

Ordering from us is easy. We accept all major credit and debit cards, including Visa, MasterCard, Switch, Delta, Maestro, Solo and American Express, as well as Amazon payments and Paypal - making placing an order with us as easy and convenient as possible.

payment options
click

Popular Bundles

Product Information

The Wattage you see isn’t always the wattage you get.

Some brands tweak tests to get great wattage ratings, but in reality, they deliver much lower max wattages. Don’t be fooled by wattage tricks. Below are examples of how we guarantee our wattage.

Continuous Power

Wattage and heat go hand-in-hand. Other PSUs claim a certain wattage by using unrealistic testing environments like 25°C, but in real settings, they might reach much lower wattages. XFX PSUs guarantee the advertised wattage, even at well above standard operating conditions at 50°C.

Clean Power

Power drawn from your AC outlet is typically dirty with voltage spikes and fluctuations, which can harm vital PC components. XFX PSUs are designed to deliver tight DC voltage regulation with minimal AC ripple, giving you safer, cleaner power.

Efficient Power Use

80 Plus Gold certified means that this XFX PSU has a power efficiency of up to 90%. Compare that to non-certified PSUs, which lose at least 20% of power drawn. With the XFX PSU, get every watt you pay for.

Extreme Heat Tested Capacitors

Internal PC operating temperature is around 35°C but the internal PSU temperature can be much higher. XFX uses all high-quality Japanese brand capacitors rated to withstand up to 105°C. While some competitors claim to use Japanese capacitors, they may only be rated for 85°C, which can shorten the usable life of a PSU.

Automatic Protection Sensors

All XFX PSUs come with automatic output protection systems to protect you and your computer. This includes Total Power Protection (OPP), Over Voltage Protection (OVP), Over Current Protection (OCP) and Short Circuit Protection (SCP)

 

Tech Spec

Cooling
Cooling type Active
Fan diameter 120 mm
Fan location Top
Fan speed 2050 rpm
Number of fans 1
Design
Colour of product Black
Illumination
Performance
ATX version 2.2
EPS version 2.91
Form factor ATX
Noise level - dB
Noise level (quiet mode, 50%) 16 dB
Noise level (silent mode, <30%) 0 dB
On/off switch
Purpose PC
Ports & interfaces
Cabling Type modular
CPU power connector (4+4 pin)
CPU power connectors (8-pin) 1
EPS power connector (8-pin)
Floppy drive power connector 1
Motherboard power connector 20+4 pin ATX
Number of SATA power connectors 10
PCI Express power connectors (6+2 pin) 6
Peripheral (Molex) power connectors (4-pin) 5
Power
AC input frequency 50 - 60 Hz
AC input voltage 100 - 240 V
Combined power (+12V) 840 W
Combined power (+3.3V) 125 W
Combined power (+5V) 125 W
Combined power (+5Vsb) 15 W
Combined power (-12V) 6 W
DC output voltage +12V1,+3.3V,+5V,+5Vsb,-12V
Efficiency 90 %
Input current 11 - 5.5 A
Max output current (+12V1) 70 A
Max output current (+3.3V) 25 A
Max output current (+5V) 25 A
Max output current (+5Vsb) 3 A
Max output current (-12V) 0.8 A
Nominal power 850 W
Overheat protection
Power Factor Correction (PFC) type Active
Power protection features Over current,Over power,Over voltage,Short circuit,Under voltage
Certificates
80 PLUS certification Gold
Certification C-tick
CB
TUV
Energy Star certified -
RoHS compliance -
Packaging content
Manual
Packaging data
Package dimensions (WxDxH) 210 x 163 x 319 mm
Package weight 2760 g
Packaging type Box
Weight & dimensions
Depth 160 mm
Height 86 mm
Width 140 mm

Finance Options

Buy Now, Pay Nothing for 12 Months

You can choose to buy your product today and pay nothing for either 6 or 12 months, then choose to settle the payment in full for a £35 settlement charge or pay monthly over 3 years. There is a minimum order value of £150 for Buy Now, Pay Later finance. To find out exactly what it will cost please use our finance calculator below. 

Buy Now, Pay Nothing for 12 Months

We offer pay monthly finance options ranging from 6 months to 42 months. For PayPal Credit finance, who offer 6, 12, 18 and 24 months finance, the minimum order value is £99. For V12 Finance, who offer 24, 36 and 42 months finance the minimum order value is £500. To find out exactly what it will cost please use our finance calculator below. 

Enter your order total:
£
Calculate

Representative Example

  • Purchase rate p.a. (variable)

    17.9%

  • Representative APR (variable)

    17.9% APR

  • Assumed Credit Limit

    £1,200


This represents the typical costs of using a PayPal Credit limit not including instalment offers. The rate of interest that applies to your order is defined by the option you select. This example is based on your using PayPal Credit in future purchases either from us or other retailers.

FAQs

What ais your eligibility criteria?

Please make sure you meet these simple requirements

  • Your order is £99 or more for PayPal Credit, £150 or more for Buy Now, Pay Later and £500 or more for V12 Pay Monthly.
  • You are 18 years or older
  • You are a UK resident, and have been for more than 3 years
  • You can make regular direct debit payments
  • You are in regular employment, or permanently live with a spouse who is in regular employment
  • Have a credit/debit card in your name that is registered to your current address
  • You have a good credit history, and have received no CCJs

How long does it take to apply?

That depends how fast you can type! There are no lengthy applications to complete, you're just asked a few short questions and you can get an instant decision.

What if I am declined for finance?

When you're applying for finance you always need to remember that there is a possibility you will be declined. This can often be caused by one of a number of reasons, but usually it will be caused by a negative credit score or a default on an existing loan. We've done our best to make it as easy as possible for our customers that aren't successful in applying to continue their order and pay by Credit Card, Debit Card, PayPal Wallet or Bank Transfer - it really is as simple as clicking "complete my order using a different method". And as always, if you have any concerns please do get in touch.

How do I apply for finance?

Add the item you wish to puchase to your basket, if you wish to complete your finance using PayPal Credit simply clikc the button in the basket and follow the instructions. If you wish to use V12 Finance complet the checkout process until you reach the "Payment Details" and select the finance option you wish to apply for.

Questions & Answers

Customer Reviews

XFX P1-850B-BEFX Pro Black Edition 850W Full Modular Power Supply (PSU) reviews verified by reevooReevoo

Design
9.4
Performance
9.5
Reliability
9.7
Value for money
8.4
Overall rating
9.2
Scores 9.2 out of 10 based on 17 reviews
 
SAVE 10%

HP 250 G5 Core i5 Laptop

£449.97
SAVE 26%

LG 43" Full HD Smart TV

£319.97
SAVE 13%

Protect your home!

£139.97