What are system requirements? I get 10 fps

---my system---

windows 7 ultimate 64bit

intel pentium dualcore e6700 3.20 GHz

amd radeon hd5450 512 mb

2GB RAM

I got 35 fps my sistem req is

intel i3 procesor

8GB RAM

Intel core 2 quad 2.4 GHz

Windows 7 64 bit