Should be fine as long as it can deliver the required amps on 12V rail. Can't seem to find a spec sheet which shows 12V amp/watt rating. It is a single rail design which is good as long just a question of enough 12V amps.
Yeah. I know how PSU works ( if you have 1200 W PSU it does not pull all the 1200 but only how much you need ) but the sign that a bigger PSU is needed means that the power consumption was AGAIN underestimated and will probably end up being close to 3000 W.