want to add dedicated mining cards

Feb 11, 2014
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I have an Asrock Z87 extreme 4 motherboard with a single GTX 770 installed. I want to add 2 R9 270x cards and dedicate them to cryptocurrency mining. Will i have an trouble just adding in the 2 cards to my 2 available PCI-3.0 slots? (power consumption and and heat should not be a problem with my build)