pc upgrade

[ek308666]

how would i go about upgrading the psu in a prodesk 600 G1 this is needed so i can be able to power a gpu i got for it any clue on what i can do

[itsmyname]

@ek308666 -- what is the wattage of the current power-supply? 

What is the wattage consumed by the CPU?  Maybe, 65 watts?

The RAM consumes much less than 1 watt.

A "spinning" disk-drive consumes less than 10 watts, while a SSD consumes even less.

What wattage is consumed by the motherboard? By the CD/DVD device? 

What wattage is consumed by external devices, such as USB 3.5-inch floppy-reader, or external 2-inch disk-drive?

What is the wattage requirement for the new GPU? I tend to ignore any recommendation that comes with it -- something like "400 watt power-supply is required".

Evaluate your wattage needs, before spending your money on a different power-supply.

If you are not familiar with disassembling your computer, such as to replace the power-supply, I recommend that you take the computer to a professional technician.

[ek308666]

idk how much the cpu uses its a i5 4570 

[itsmyname]

@ek308666 -- how much the CPU uses

The wattage is at:  Intel Core i54570 Processor 6M Cache up to 3.60 GHz Product Specifications