upgrading my Game PC

[MUFCjoost]

Hello people,

I want to upgrade my computer but I am not sure what to upgrade and to what parts.
Specs
Mobo:b85m-hd3
CPU: Intel Core i5-4440 3.1 GHz
RAM: 8 Giggs (2x4)
Videocard: Sapphire Radeon R7 260x 2 GB ram
PSU: 450 watts

I think i should upgrade my GPu so maybe a GTX 750 ti but it's getting on a little bit. So i think GTX 950 or GTX 960. I don't really want to upgrade my psu. And the R7 and R9 series consume more wattage as the GTX cards as far as i know.

Thank you in advance.

 

[Brunostako]

You should upgrade both your GPU and your PSU.

A R9 380 or GTX 960 and get a good 550W 80+Bronze PSU.

 

[MUFCjoost]

Is the Cooler Master GM G550M good enough?

 

[Brunostako]

Cooler Master is not a good brand in the entry level PSUs. Better go with XFX, Antec or SeaSonic.