r9 290

My video card - http://pcpartpicker.com/part/gigabyte-video-card-gvr929d54gdb The card I want - http://www.newegg.com/Product/Product.aspx?Item=N82E16814127774 My motherboard - http://www.gigabyte.com/products/product-page.aspx?pid=4280#ov I'm wondering if I can run these at the same time...

I have not had this problem before, at first I was getting around 175-300 fps in Minecraft. I couldn't be happier. Unfortunately, I just re-installed windows 8.1 on my system, and now that I play Minecraft I'm lucky to get even 45 fps while walking. I have no idea what happened or what might...