Amd a6-3600 apu with radeon(tm) with 6350 hd graphics

Was wondering if i could upgrade my graphics card as A) it's been recently crashing on me, B) i want something stronger, my processor can handle the load it's my video card, that's going to *** i'm running 1920 x1080 without any hickups or kicks to the face in frame rate, with the exception of my video games, which i have to drop the higher end games to about 1440x 900 at low to medium settings without any noticable difference. C) the question i have is pertaining the upgrading the video card, as you can tell, i'm nervous because my crureent keeps on crashing, and I want a replacement asp it holds pci-express my budget is 100-200 dollars, what the best money value, without any heavy modifications to my rig, of a video card, that would fit, into the slot, (i don't know the difference between all the pci-express versions) all it shows on me and cpuz is pci express with

amd a6-3600 apu with radeon(tm) with 6350 hd graphics / and link width and max supported shows x0 /

core voltage ranging from 1.0-1.1 vol

dont' know if this helps but I would really appreciate some help, on purchasing something that would kick ass and chew bubble gum, and maybe solve hunger and world peace, but mostly , fix my loving computer, with some hugs and a new card.