So, I'm thinking of upgrading the system with a better cpu. I do not play so much visual intense games (Crysis?), so I was thinking of going with the E8400. A friend of mine has a Q8400, and he is selling that one cheap. However, I do not know if I will have use of all 4 cores and also the cache is smaller on that one. The E8400 I will buy new (with warranty and so on), and I'll get it for 150US$/150€ or 1500:- SEK. And the one that my friend is selling he, wants like 140€ for that one. Some people say that the E8400 will do perfectly well. Any other opinions? Thankful for any replies given.