For my birthday, I got a gaming computer, it's ok, but reviews about it said that it needs a new graphic card and a power supply because the power supply it has can die pretty quickly and damage the internal parts, I don't know much about computers and I was think about buying this power supply and graphic card but I don't know if they are compatible or if they will fit in the tower, here are the links to the parts.
The computer tower
The graphic card
The power supply
I know that there are way better choices, but I have to pay for the upgrades and customer reviews say that these are good for the price, I just need to know if they can fit in the tower and if they are compatible, and if I am missing parts, like cords to attach these things to the tower, or any missing part in general, please tell me, I don't want to spend all of this money and not having it be able to fit in the freakin tower!