E8400/8500 degradation myth possibly busted?

[mrcape]

What multiplier did you use, to get what speed?

Well, mobo has a lot to do with the high fsb. This DFI/bios is just made for it. About you getting stable over 4ghz, you should be able to do that with way less vcore. You gotta set gtls manually.

For example first try to get stable with manual gtls at 500x8 keeping ram ratio 1:1 to keep memory out of the equation. Try to set NB & fsb term relativeley low and use gtls between 58-62. For me a real sweet spot is 8x500, NB 1.4 with gtls 59/59/59. Toy around and you'll get it. Doing that, it should be stable and require less vcore too! So that buys you more headroom to try 8.5x500 with the same settings but maybe just a few core bumps. Over 4.3ghz and the wolfdales need for more juice scales up pretty quick.