im running 2 4870s with a 600 watts PSU, i think you will be just fine.
Crossfire 4890 powah?
I've been getting a ton of mail in rebate cards in the mail recently so I'm considering getting a second 4890
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However, with my current setup I'm worried my PSU won't be able to handle the power draw. Sig Rig for specs
However, with my current setup I'm worried my PSU won't be able to handle the power draw. Sig Rig for specs
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You can run 3x 4890s on that psu
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Your PSU will do just fine. The only thing to consider would be the fact that the amps on rails will likely be at closer to full capacity, which is fine--it just means your PSU will run a little hotter
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