Will it bend?

Hello, thanks for reading. Now around christmas I will get myself a new processor, motherboard and harddrive. Atm I have a 450W power supply by xfx, but will that power supply be enough for a fx 6300 and a gtx 550 that I have atm. I also plan to upgrade to a r9 270x when I get the money to do so, but will I have to buy a new power supply?

You should be fine with either GPU.

my friend is using the XFX 450 psu with a [email protected] and a HD6870 no problem so the 270x should be fine too