thanks for your suggestion NdMk2010! I looked and compared many CPUs, i also compared i5 2500 with these 2nd gen core i7 ones.
Well, i'm not a pro at all in this topic but there are huge differences between those 2 cpu-s if i compare them.. i7-980 has 6 cores with 3.33ghz, it has 12M cache, qpi...