hello tomshardware i am sorry if this is in the wrong category, so i am upgrading my current pc to a gtx 750 but my current power supply is only 220 watts so i m also getting a new psu i dont know if the new one is gonna fit into my case current case: acer xc 600 new psu: http://gear-up.me/chassis-and-psu/power-supply-unit/fortron-1u-400w-fsp400-701uh-80plus-bronze.html