The Crosshair IV Formula has the option to be a am3+ socket motherboard and run the first gen FX cpus with a bios update, does this now include the piledriver fx series? Asus says that up to the 8150 is compatible for the motherboard, but my friend thinks something is wrong with his x6 1090t because the 3rd core always deactivates and turns to a 5 core cpu.