on a whole the c2q chip is still a very good cpu. it can still hold it own in most case when given a slight overclock when compare to i7 but their are thing that the i7 will do much better than what a c2q can do. so my advise if you got an c2q can get that extra bit of life out it, then do so as it will give you more time to save up. also most modern cpu cooler will let you overclock the cpu much better than what the cpu cooler that were available at time would let you do safely for example the cosair H series coolers or Phanteks ph-tc14pe cpu cooler.