How powerful of a psu would I need to run a 7950 with my current setup?

[Timeparadox]

How powerful of a psu would I need to run a 7950 with my current setup?

Here is the PC I currently have I know I will need a much more powerful psu for obvious reasons.

Hp 400f
http://www.newegg.com/Product/Product.aspx?Item=N82E16883147376

I also plan to upgrade to a better case with three fans.

The case

http://www.newegg.com/Product/Product.aspx?Item=N82E16883147376

 

[Shamar Holtz]

750w Antec or Corsair PSU, must be bronze + certified

 

[Shamar Holtz]

here http://pcpartpicker.com/part/antec-power-supply-ea750platinum

Need a cheaper priced one?

 

[Dark Lord of Tech]

That PSU won't fit , you need one that is OEM sized , here you go and it's plenty of power.


Dimensions
5.5" x 5.9" x 3.4"

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($44.99 @ NCIX US)
Total: $44.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-13 13:28 EDT-0400

 

[Shamar Holtz]

Oh yeah, forgot about case and PSU sizes...

 

[Timeparadox]

First thanks for trying to help me. Question: Would the xfx 550 be enough to power it? I have heard some people say that you need a 600watt at least.

 

[Dark Lord of Tech]

A Radeon HD 7950 needs 25 amps on the 12v+ rail and a 500 watt power supply and 2 - 6 pin PCIE power connections.

The XFX 550W has the needed connections and 44 amps on the 12v + rail.

The XFX 550W is more than sufficient to power your specs.

 

[nikoli707]

get the xfx power supply. its by far the best quality power supply you can get in its wattage and price range.

 

[Timeparadox]

Okay sorry for being a bit of a pain PC newbie here.

One other question: Can I run two monitors using the 7950 with that 550 watt ?

 

[Dark Lord of Tech]

Yes you should be fine , the XFX has enough power for the setup.

 

[mhirons]

For what it's worth, I pull about 270W max from the wall while gaming. i5-4690, 7950, 660W 80+platinum PSU.

 

[Timeparadox]

Thanks for all the help guys !