I was thinking GTX 750ti, would it bottleneck or would I be okay? Also I don;t know if it would be compatible with the motherboard!
http://www.overstock.com/Electronics/HP-8000-Elite-3.16GHz-4GB-1TB-MT-Computer-Refurbished/7721083/product.html#more
http://www.overstock.com/Electronics/HP-8000-Elite-3.16GHz-4GB-1TB-MT-Computer-Refurbished/7721083/product.html#more