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Help choosing a power supply for my custom gaming PC

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October 2, 2013 1:46:24 PM

I am putting together a parts list for my first custom PC build (it will be for gaming) and need help choosing between two power supply's. I found a good 550watt 80plus bronze XFX ProSeries that I've heard is great. But Newegg put out a deal for a 750watt 80plus bronze power supply, but it's from Corsair's CX series, which I have heard isn't their best work, but it way more powerful than the XFX for less. I know that the Corsair is WAYYYYY overpowered for my build, but I might as well get the best I can if the price is right (right?). So should I get the Corsair or XFX? Also if I get the Corsair, will I need better a better cooling system for the PC?

XFX Power Pupply

Corsair Power Supply

My Parts List

thanks :) 
October 2, 2013 1:57:17 PM

Yes it is always a good idea not to scimp with the power supply and get the best you can afford as if it has a problem it can damage eveything in your pc.
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a b 4 Gaming
a c 1200 ) Power supply
October 2, 2013 2:01:16 PM

What's the brand and model of the CPU and graphics card?
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a b 4 Gaming
a c 1200 ) Power supply
October 2, 2013 2:28:37 PM

ShazamoTheGreat said:
ko888 said:
What's the brand and model of the CPU and graphics card?
CPU: AMD FX-6300 6-Core Processor Black Edition
http://www.amazon.com/AMD-FD6300WMHKBOX-FX-6300-Process...

Video Card: Sapphire Radeon HD 7870
http://www.amazon.com/Sapphire-DL-DVI-I-SL-DVI-D-PCI-Ex...


For a system using a single AMD reference design Radeon HD 7870 GHz Edition graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 28 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

The XFX ProSeries Core Edition 550W (P1-550S-XXB9) power supply unit, with its maximum combined +12 Volt continuous current rating of 44 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single Radeon HD 7870 GHz Edition graphics card.

The XFX PSU is of higher quality because it uses higher quality capacitors in its construction. It has a 5 year warranty whereas the Corsair CX750 has only a 3 year warranty because of the cheap capacitors used in its construction.
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October 2, 2013 2:33:10 PM

cin19 said:
The CX is the budget series, and xfx is great one. Get the XFX.
Maybe you need the aftermarket cooler for the fx 6300. Like the hyper 212 evo. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Or http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Add I think you just forget about the fan in the side panel, you don't need it, IMO.

Haha, that's funny, I had that Hyper 212 Evo in my bookmarks that I forgot to put on the parts list. I guess I did a good job picking it out, I'll go with that one.
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October 2, 2013 2:42:34 PM

ko888 said:
ShazamoTheGreat said:
ko888 said:
What's the brand and model of the CPU and graphics card?
CPU: AMD FX-6300 6-Core Processor Black Edition
http://www.amazon.com/AMD-FD6300WMHKBOX-FX-6300-Process...

Video Card: Sapphire Radeon HD 7870
http://www.amazon.com/Sapphire-DL-DVI-I-SL-DVI-D-PCI-Ex...


For a system using a single AMD reference design Radeon HD 7870 GHz Edition graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 28 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

The XFX ProSeries Core Edition 550W (P1-550S-XXB9) power supply unit, with its maximum combined +12 Volt continuous current rating of 44 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with a single Radeon HD 7870 GHz Edition graphics card.

The XFX PSU is of higher quality because it uses higher quality capacitors in its construction. It has a 5 year warranty whereas the Corsair CX750 has only a 3 year warranty because of the cheap capacitors used in its construction.
Wow, that's a lot of info, but very helpful. I'll stick with the XFX. Also, where did you get this info?

Thanks a lot :) 

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