only the 95W CPUs (so youd have to choose the CPU carefully)
Buying online is usually cheaper than going to a store.
Im sure people know what CPU's the board supports, its just that if your buying a PC most folks just go for stuff that works without haveing to flash bios's first.
http://www.asrock.com/mb/NVIDIA/N68-VS3%20FX/?cat=CPU <--- List of supported CPUs