Want to about smps capability

[Bhaiyu]

I have 450watts smps
And my system specs is
Processor intel g2020
Ecs h61 Motherboard
4gb ram
320gb hdd
Dvd writer
I want to add 500gb hdd and nvidia gt 610 graphic card so i want know that 450watts smps ok or i have buy new smps which is more powerful.

 

[DonkeyOatie]

You have plenty of power, if the SMPS provided the 450W it says it is capable of. Your whole system uses less than 100W, and your upgrades till total less than 50W. You GPU is rated at around 30W.