CPU-Z by CPUID.
Software that will tell about your motherboard, cpu, ram, etc etc...
Sorry, I misunderstood (I think..) without turning it on, you wont be able to tell for sure which BIOS version you sport.
However, if you meant from windows, see CPU-Z.
If you bought it before that specific compatibility BIOS was released, chances are, unless you flashed it, it wont work. Usually when motherboards are released from the factory they include the newest most stable BIOS. If the motherboard was purchased recently from a major reseller, chances are that it would ship with a recent BIOS, especially if it adds CPU compatibility.