Am in same situation i can get my 720 to 3.7 stable and a 955 seems pointless! But after what have seen today the system seemed alot faster a 3.1 with the new bios using all 4core! It must be a memory issue with F3B or something like that! If i cant get the 4core workin on the next bios i will have to get a new 955! Seems a con really making F3b and getting people excited to just cut the support for 4core after!