Yeah, the A3 uses around 1200w of power according to its spec sheet. 1300W PSU will work but usually, it's recommended to not run your PSU over 80% of its max wattage. But for a little time, you should be completely fine 
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. Thanks. I got the miner but I dont have 10 connections with 6 pins. I have only 6 coming with the evea. How can I solve it?