I get the impression that the beta 1.22 may have been released to specifically address compatibility with certain cpus. It's a good enough bios but as I said in the msi thread, the beta 1.21 has advantages for me. With 1.22 if I try to increase my overclock too fast I get a no post and the only way I can continue is with a cmos clr. With 1.21 I can set my desired fsb without this happening pretty much no matter how high I go, unless I hit a fsb hole. You may think these fsb holes are a big problem but really they aren't difficult to work around and they are pretty much a fact with any of the nvidia chipset intel boards. I'm not real clear on the specifics but they have something to do with the way the mem dividers/straps are figured. The plus side to this is that there are tons more memory speed options than with intel chipsets. I only ran the 1.22 beta very briefly. All my recent testing has been with 1.21.