Ok I currently have an athlon II x2 250 clocked at 3.6ghz. I was wondering how much real world difference I would see upgrading to an i5 2500k. By real world usage I mean average daily stuff like vidoes and email etc. Plus gaming such as CIV 5 and Bad company 2. My other components are a hd 6850 and 4gbs of ram plus a bog standard hard drive. For a decent mobo and the CPU the upgrade cost would be around £270. So I was just wondering what the bang for buck is compared to my current set up.