..I'm hoping you can do it again. I've just bought some PC2400 Kingmax DDR Ram (2x256mb). My system (Athlon C 1.2ghz, ASUS A7M266 Motherboard) will only recognise it as PC2100. Any way to change this? It is running fine, but I would like to know if I can run at PC2400, presuming it may be a little faster. Any ill effects from running this ram in my system, if it will only recognise PC2100? Any advice would be greatly appreciated.