Is this Graphics Card right for me?

[SpartenOmega117]

http://www.bestbuy.com/site/XFX+-+ATI+RADEON+HD+4650+1GB+DDR2+PCI+Express+Graphics+Card/9254585.p?id=1218069451494&skuId=9254585

I am not a hardcore PC gamer or anything. I just want to play some games like startcraft 2 and maybe some other games like falout NV. I have the hp a6110n. It only has a 200 watt psu. Will that be a problem? Do you guys think this card is good enough to suit my needs?