Right now i've i7-2600 non K , msi p67a-gd65,4gb 1333mhz ram, 650 watt powersupply,and radeon hd6670 1gb gddr5 128, if i want to upgrading my graphic cards with MSI gtx960 gaming 4g and 8gb of 1600 mhz ram, would it be a bottleneck for my processor? Please help me to solve this problem,thanks..