looking to upgrade cyberpower pc

[helllolyeah]

i brought cyberpower pc last year from bestbuy, because of how it look like i thought it is gaming pc but missed to do some research here are my spec:
Motherboard: MSI 760GM -P34 fx
Processor: AMD FX 4300
RAM: 8 Gb
Video Card : amd radeon hd 6450 1GB
power supply : only 350 W
HHD: 500 Gb
here is what i would like to do :
budged $500+
i am trying to upogarde video card to Radeon R9 290 and i know i have to upgrade also PSU . (sorry i am newbie ) will my motherboard support that video card or video card close to that and will i need to change processor ??

 

[DISMEMBERED]

I am currently running an AMD FX-6300 Turbo Black Edition CPU, XFX R9 290A DD Black Edition GPU, and XFX XTS 1000W PSU on a MSI 760GM P-34 (FX). You could easily get by with a 650W, or 750W PSU, running an R9 290. Yes, it will work with your motherboard. You can get a good R9 290 and 750W PSU for under $500. Make sure you don't cheap out on your power supply. Find something 80+ Bronze rated or better. Hope this helps.

My GPU
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150701&cm_re=xfx_r9_290-_-14-150-701-_-Product

My PSU
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207019

I would upgrade the CPU in the near future, but I would go ahead a swap out the GPU and PSU now. You will need the larger power supply for the new video card and those two upgrades will eat up your current budget. Work on saving up a couple hundred more if you want to swap out all three at the same time. You can get the AMD FX-6300 for about $100 if you shop around. You could go ahead a grab an FX-8350 Black Edition for around $170.