Can i put in a 420 Watt Power supply into a computer that comes with a 300 Watt

[devincmp]

Hello,
Can i put in a 420 Watt Power supply into a computer that comes with a 300 Watt Supply? Putting in a Quad video card that requires a 400 Watt power supply. Computer is a Lenovo Thinkcentre M51/8141

 

[rolli59]

Yes if it fits physically (same form factor) no problem.