System power consumption.

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Aviano

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Jun 25, 2014
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How do I calculate system total power consumption, I want to figure out what my 320 watt ps can support.
 
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JackNaylorPE

JackNaylorPE

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Oct 30, 2004
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Generally required system wattage is determined by your GFX card.

1. Use PSU calculator in above post

2. Look up GFX card manufacturer's system requirements ....

nVidia - http://www.geforce.com/hardware/desktop-gpus
Click on Card / Specifications / Scroll down to Thermal and Power Specs

AMD - AMD has gotten a bit shy about posting their system power requirements since the R7.R9 series.

3. Google "Guru 3G [your GFX card]", go to review, use drop down to find power consumption. For example:

http://www.guru3d.com/articles_pages/radeon_r7_260x_r9_270x_280x_review_benchmarks,10.html

Here is Guru3D's power supply recommendation:

AMD R7 260X - On your average system the card requires you to have a 450 Watt power supply unit.
AMD R7 260X Crossfire - On your average system the cards require you to have a 650 Watt power supply unit as minimum.

AMD R9 270X - On your average system the card requires you to have a 500 Watt power supply unit.
AMD R9 270X Crossfire - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

AMD R9 280X - On your average system the card requires you to have a 550 Watt power supply unit.
AMD R9 280X Crossfire - On your average system the cards require you to have a 750 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...
 
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