The current CPU you have now is AM2+ socket and you have a 780G chip set on the motherboard that points to your Motherboard being AM2+. Most of those support AM3 cpu's which are better than the original phenoms. To find out for sure you would have to check with Gateway. If you on the other hand want to get a new motherboard and stick in the case with a better CPU there is plenty of micro ATX boards available that support AM3 CPU's and DDR2 ram for a reasonable price. The brand s to look for would be Gigabyte, Asus and MSI and they would have to support AM2+ and AM3 under socket.