Thanks a lot for the reply!
Ya its a pre-built PC bought at best buy if i recall correctly last year.
This is pretty much what I have:
http://www.acer.ca/ac/en/CA/content/model/DT.SRQAA.019
The one exception is mine is 4460.
it says ATC-605-EB1H on my case
Windows 8.1
Intel Core i5-4460 3.10 GHz
AMD Radeon R7 240 with Dedicated Memory
8 GB, DDR3 SDRAM
1 TB HDD
It feels upsetting, spent 230$ on that video card via amazon, but at least I can return it until the end of january, so that helps.
I would be happy with some recommendation for my situation. Im assuming theres not much to do with this huge radeon since no way its going to fit in my case.
I would be really thankful if someone could recommend a good card that my pc would be able to handle, but most importantly that I could fit in it myself as I really dont want to bring my pc to a computer store, pay more for them to do it, even though I never dealt with pc's myself Iv'e done my research and it looks like installing a video card isnt hard, I just now want to know what card I should get that will fit my case, hopefully its a powerful one too.
I initially though of gtx 960 vs r9, but now i think gtx 960 also would not fit my box.
I kinda think if i now have to change the case and all that stuff its all gonna cost a lot of money . . .as I wouldnt be doing it myself.
Also when I opened the case I couldn't see how many WATTS my cpu has, like the number is not there or im not looking at the right place.
Thanks for the help!