AMD XFX R9 280 w/ 550 Antec PSU

kevron

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BadBoyGreek

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+1 this. The fact that your power supply isn't equipped with the 8 pin PCI-E power already means it's an older design not really intended to support newer cards. Try to upgrade sooner than later if you can; going to a current power supply, like a 600w Corsair or EVGA bronze unit should be a fairly inexpensive upgrade, about $60.
 

kevron

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That's pretty much what I was figuring. I was looking at the voltage on the +12 rails and such...Best not to chance it and get an appropriate PSU. I'll wait.

Thanks for the advice.
 

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