I have a Asus P6T motherboard which is roughly 5-6 years old. Just wondering if the new GTX 950 which is a 3.0 pci-e card will be able to work smoothly on the 2.0 pci-e slot that the motherboard have. Also will there be any performance issue? I'm a noob at computers and I'm trying to build a pc that can play gta5 and battlefield 4 smoothly with affordable cost.