I just killed that processor. It did, though last for 3 years at 4.11GHz for me.
I applied a little more voltage to the "CPU/NB". Maybe a couple clicks up from stock, but not too much. I don't remember the exact number, but 1.7 will kill it. Try to push it beyond 1.4, if it's not there yet. This is assuming you have all other things dialed in, and that your cooling is better than the sub-standard stock HSF that was supplied.
RAM timings are important, as well as HT freq and NB freq. it was really a stroke of luck that got me there. I had the NB and HT both @ 2600 MHz. I'm not sure I could tell you exactly how, after all the attempts, that it just decided to work one time.
I had CPU V at 1.6250 @ 4.1 GHZ (205 x 20) LLC off, RAM @ 1600+ @ 8-8-8-20 and 1.800V, CPU/NB @ 1.522V (bios had an "extreme over-volt" option that sent this over 1.7, which in turn killed the CPU) spread spectrum off, you probably know the rest.
I'll check up and see if any of this helps you, if you'd like.
Hope this helps...
Asus Crosshair V Formula-Z, NB & FSB @2608 MHz
AMD 8350 @ 5.02 GHz 1.524V (200.6 x 25)
16GB GSkill Trident @ 2133 MHz C10
Asus 7870 2 GB 1200core/5500mem
Samsung 250GB SSD
Cooler Master HAF 932
Windows 7 x64
VRS Superbug/TacPack, Iris A-10A, PMDG 77W, 744 and MD-11
REX texture direct, FTX Global