Question Corsair CX450 with my setup is gonna work ?

[Nicollas]

CPU: Intel Core i5-4460 CPU @ 3.20Ghz 3.20 Ghz

Graphic Card : MSI AMD Radeon RX 570 Armor 8G (I recently bought it is the reason I'm switching my power supply)

Memory: HyperX Fury 8GB 1600MHz DDR3

 

[Barty1884]

Shouldn't be any problem at all.

 

[geofelt]

The RX570 needs an 8 pin pcie connector which the CX450 will have.
So, you are ok for now.
But, my suggestion is to buy a stronger high quality unit which will last you for the long term.
Something like a seasonic focus 550/650w psu.