Best Power Supply under $150

ara_430

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Jan 17, 2013
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I'm looking for a new power supply because my Corsair Cx750 died after only 2 months. What would be the best available option $150 and under.

Specs:
i5-3570k processor
P8H77-V motherboard
G.SKILL 8 GB 1600 Ram
OCZ Vertex II 180 gb SSD
GTX 680
 

Greatatlantic

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Mar 17, 2013
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If your Corsair PSU died after 2 months, I'd wager Corsair would be willing to replace it at no cost to you. Corsair is definitely one of the top brands to have in PSUs, and it sounds like you just got an unfortunate dud. Check out the RMA part of their website.
 

4745454b

Titan
Moderator
We do people suggest 750W+ PSUs for a system with only a GTX680 in it? This system will draw at most 350W and many of you are saying 850W PSUs. These will run at less then 50% output. Not a good thing.

I agree. RMA the corsair. Duds happen.
 
For a system using a single GeForce GTX 680 graphics card NVIDIA specifies a minimum of a 550 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors or one 6-pin and one 8-pin PCI Express supplementary power connectors depending on brand and model of the graphics card.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151122
 

ara_430

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I do eventually plan on purchasing a second GTX 680 to run in SLI
 


For a system using two GeForce GTX 680 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 750 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 53 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors or two 6-pin and two 8-pin PCI Express supplementary power connectors depending on brand and model of the graphics card.

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

Overclocking of the CPU and/or GPU(s) will 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 Seasonic M12II-750 Bronze (SS-750AM), with its maximum combined +12 Volt continuous current rating of 62 Amps and with four (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two GeForce GTX 680 graphics cards in 2-way SLI mode.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151107
 

ara_430

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4745454b

Titan
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I meant to say why... Why do people seem to see GTX680 and think you need a 750W+ PSU to run it. Happens in nearly every thread I run across.

If you are planing on getting two then by all means get a 750W, or 850W if you will be running two and OCing. (If OCing means water and the pump will run on the PSU then I usually tell people to get a 1kW PSU.) Single card is 500W, CF/SLI around 750W. But in most threads I see people saying 750W for just one. I really don't get it.
 

ara_430

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I already over clocked my i5 to 4Ghz and use an H60 cooler. So an 850W PSU should be my most reasonable option?
 

4745454b

Titan
Moderator
OCing the GTX680s as well? A 750W should do it.

Assuming this is your motherboard you have an issue.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131834

I don't think its SLI. The second PCIe 16x slot is only 2.0 x4. SLI usually requires 8x/8x on same type of slot. I don't think you can SLI on 3.0 16x and 2.0 4x. And the page doesn't say you can SLI. If so you are back to looking at a 500W or so PSU.
 

ara_430

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I was also planning on upgrading my motherboard before I purchased a second 680.
 

How did you reach 4GHz on a H77 board?