Can my psu run a Radeon r9 390 and an Intel 2600k?

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Dec 12, 2015
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So. I've got a 750w cooler master power supply with an Intel 2600k @3.4ghz and an Amd radeon HD 6950. I'm about to buy either a radeon r9 390 or a gtx 970. The r9 390 has two times the memory and more processing power but it uses much more power. (270w) The 970 does have a higher clock speed but prfft, it's pretty much insignificant. So I would want the r9 390 because it has more power and memory plus I don't have to change my drivers. So, can I run it? I'm also thinking about overclocking my cpu so please take that into consideration aswell. Thanks in advance!