mgoldb2 said:or you a mutitasker and use multiple applications at the same time like I do.
or here one for the gamers have you ever sundenly started going slow because your firewall or virus scanner starting doing some thing well with dual core the secound core can take care of it and not affect your gaming.
Not necessarly true. Only true if your Firewall/Virus Scanner supports dual-cpu/multi-threading.
On dual-core/multi-cpu/Hyper-Threaded/etc systems, the task manager will show you the cpu usage. It reports it as another processor. This allows you to see your benefit of it.