There is much more to a PSU than its labelled wattage and efficiency rating. That wattage may not even be reachable in real-world situations, and that bronze efficiency badge could be inaccurate. And wattage isn't the only thing you should be looking at. You don't want to be powering your components with out of spec voltages or insufficient protections.
Your build is going to draw under 300w at high loads.
Please provide you power supply model number.