Hi i was wondering if i could replace my current graphics card (nvidia gt 720) with a nvidia gtx 750 ti? Im not 100% sure i can run the new gpu. This is my pc
http://www.bestbuy.com/site/lenovo-desktop-8gb-memory-1tb-hard-drive/5958014.p?id=1219178692600&skuId=5958014
http://www.bestbuy.com/site/lenovo-desktop-8gb-memory-1tb-hard-drive/5958014.p?id=1219178692600&skuId=5958014