Hello, I wanted to ask you guys if I should upgrade my Cpu or Gpu first. My system: Cpu: AMD Athlon II X3 445 @ 3,5 GHZ OC Mobo: Asus m2n68-am plus Ram: 4 GB PSU: 450 Watt (don't aks me the brand because I really don't know) Gpu: AMD HD 7770 So, my options are to either buy a upgrade kit (I5 3570k, 8gb RAM, GigaByte GA-Z77X-D3H) or a Geforce GTX 670. There both around the same price but witch of them give me the most performance increase? I know that my Cpu is bottlenecking the Geforce GTX 670 extremely but what is your opinion? Thanks in advance!