Power Supply for crossfire amd asus hd 7770

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claydster6

claydster6

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Aug 10, 2014
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I'm probably going to get 2 amd hd 7770s and crossfire them, right now my pc is only using a 300 watt power supply, i dont think that that'll be enough for them, but i am unable to find a watt usage for the card, what do you think would be good enough? I also have an fx 8320 cpu if that helps with the min psu
 
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prit87
For a system using two Radeon HD 7770 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 600 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 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 adequacy determination!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207031&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
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prit87

prit87

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Jun 16, 2014
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For a system using two Radeon HD 7770 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 600 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 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 adequacy determination!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207031&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
 
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