Check psu without opening cpu case?

[Kunal Saini]

I can't find the screwdriver used to open those tricky screws and i want to check my power supply unit watts to buy a new gpu. Can i check it without opening the case?

 

[jinayhvora]

no, unfortunately u can't, but most cases come with thumb screws for removing one side which u can easily open without a screwdriver

 

[refillable]

How are you going to upgrade the GPU then?