power usage estimate

[alien2eyes]

i need help estimating power usage for a computer so i can determine what gpu to get https://www.officedepot.com/a/products/321451/Lenovo-Ideacentre-300-Desktop-PC-Intel/
this is the computer
also include a mouse and key board

thanks before hand and also i know its a crappy 240 watt psu but i just want an estimate

 

[derekullo]

About 150 - 170 watts.

 

[derekullo]

Don't forget that a crappy psu taxed at 80% won't last very long if you decide to put in even a low power card like a Geforce 1050.