For the compatibility, the revision number isn't the first thing I would look at. You need to get the model number of your motherboard and go to ASUS' site and find the page for that motherboard. There will be a link to compatibilty specifcations which has a list of all the CPUs and memory types that ASUS guarantees to be compatible with that board. That's the best place to go. If you get a new motherboard and pick a random type of memory that ASUS did not explicitly state as compatible, they'll say "sorry, it's your problem." One useful tool is Pcpartpicker, which you can just Google. It has a tool to pick computer parts and it tries to automatically determine if they're all compatible. For the absolute final verdict, however, use the ASUS specs.