Can i run an R9 280x in Cross-Fire with this PSU?

jon0

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May 4, 2014
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As the title says, i've seen mixed answers about this topic and i'd like something more definite. Some people say you only need a quality 750W PSU but others say you need at least a 1000W PSU to be able to run in Cross-Fire.
Any help will be much appreciated.

Heres the PSU im thinking of getting and i'll be happy to hear about alternatives.

http://www.amazon.co.uk/Corsair-Series-Platinum-CP-9020044-UK-Warranty/dp/B00AO0YRMI/ref=sr_1_8?ie=UTF8&qid=1402675075&sr=8-8&keywords=corsair+psu

Thank you.