bobert, i think your temps are way too high for a 9300 @ idle.
i've got a 2 ghz xps2 and a 6800 ultra oc'ed to 500/1200 and it idles @ 34C cpu / 53C gpu. both have as5 applied, but the difference is 5-8C at most.
the heat is most likely from not having AC. find a well AC'ed room and if your temps are still like that then definitely look into it.