Im getting a video card but i dont know if it will fit in my case?

Im planning on getting this card ( a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16814103104" rel="nofollow"http://www.newegg.com/Product/Product.as…/a ) but this is my case ( a href="http://h10025.www1.hp.com/ewfrf/wc/doent?lc=en&dlc=en&cc=us&docname=c01859871#" rel="nofollow"http://h10025.www1.hp.com/ewfrf/wc/do…/a ) will i be able to fit it inside their ok. also i need a new psu and someone said i can fit an atx psu in there is that true. because the atx psu's i need are cheaper