Question Hp tower 8000 psu and graphics card compatibility

[blackgamer]

I recently got a HP 8000 tower computer its a i5 2nd gen and has a built in graphics card and i want to put a
INNO3D GeForce Gt 730 4GB 64Bit SDDR3 graphics card, however it requires a better psu about 500 watts , so im pretty new to computers I just wanna know how I can find which psu is compatible with this motherboard

 

[logainofhades]

A GT 730 does not need a 500w PSU. It is only a 50w ish card, with a minimum of 200w PSU. What wattage PSU does that system have?