The maximum length for a GPU in that case is 230mm with the HDD bay, and I'm pretty sure that all versions of the EVGA GTX 660 are longer than that: http://www.evga.com/Products/ProductList.aspx?type=0&family=GeForce+600+Series+Family&chipset=GTX+660
I'm confused. Here's a picture of the exact same case and the EVGA GTX 660: