I'm no AMD expert, I haven't owned one in a few years now. But when your adjusting the clock frequency your actually adjusting the cpu/dram/pci-e bus all at the same time. The pci-e bus should be at 100 but it will flucuate slightly (it's suppose to have a "locking" mechanism). When I'm adjusting my mobo the pci-e bus flucuates between 99.2 - 100.8, when it goes down to 99.2 and I'm really pushing it I've gotten that bsod, as well as a few others. Try bumping the pci-e up to 101 and see if that helps, if it doesn't help try 99.