For the most part, that would be a downgrade for him. Since most games are still only single-threaded. If i were you, i would hold off on upgrading until the X2 AM2's and Conroe's are out.APM98 said:you could go with a dual core or X2 cpu. Thats pretty much the only upgradable cpu for u right now.
Something like this for example
http://www.newegg.com/Product/Product.asp?Item=N82E16819103546
that would be a downgrade for him.