Anyone Know of a Flex ATX PSU with Single 12v Rail?

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HumanJHawkins

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Sep 14, 2014
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Does anyone know of a Flex ATX form factor power supply with a single 12v rail? Or, can you recommend one to go with a motherboard-powered low profile video card that requires a 400 watt PSU?

The best I have found have multiple rails, making me wonder if they will really have enough power on the motherboard rail to also handle the video card.

Thanks.
 
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HumanJHawkins

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Sep 14, 2014
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Interesting and that makes sense. However, the specs on several (most) low profile cards that do not have a supplemental power connector say things like "Requires a 400 watt or greater power supply." The one I am looking at is:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150713

Thanks for any advice or info on this.
 
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MeteorsRaining

MeteorsRaining

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Jul 27, 2014
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The thing with PSU is, there are some "Ultra mega stupendous 400W Gold++" brands in market which label their PSUs like that and then people yell over the GPU manufacturers when their rigs light up after a new GPU is installed. To avoid that, manufacturers usually hike up the PSU wattage.

And wattage is not important anyways, Amperage is. R7 250 is a 65W card, and the card requires less than 6 Amps for itself, a decent 300W PSU can run the rig with ease. When selecting a PSU, it is the Amperage on 12V line that matters the most. The particular GPU in question will be powered by the PCIe connection and if you have a decent 300W PSU, you don't need to get a new one. But what specific PSU do you have? Or which ones are you looking at?

Look at the PSU tier list linked in my signature.
 
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