I'm looking to upgrade motherboard/cpu from AMD Athlon 2 640 quad core sitting on N-Alvorix-RS880-UATX. Looking for some guidance, I know most of the time people have the preferences on Intel/Amd, however I don't really care. I only care that I get great performance while playing World of Warcraft which a new xpac will be out next month. I have a budget of $200 any help will be much appreciated