in reference to OCing: like Supradude said, an intel CPU that defaults at a 133 mHz fsb, has little headroom to OC since the only way to OC an intel CPU is through the fsb. going from 133 fsb to 150 fsb is possible, but unlikely, whereas going from 100 fsb to 133 fsb is much more probable (with a P3 "E" CPU, which defaults at 100 mHz fsb).
what also makes the 866EB a poor OCer is the fact that the Coppermine core seems to top out at around 1GHz (which is one of the reasons the P3 1.13 GHz CPU was recalled - it was put on the market prior to insufficient testing, and they were just pushing the coppermine core to its limits while trying to say it defaults at such a high speed.) not only will an "EB" not OC as well as an "E" due to fsb limitations, but the 866 is already 133 mHz away from the average 1GHz limit of the Coppermine core. some might go to 1.1 GHz, and others might not even make it to 1 GHz. its all chance, but statistics definitely show that 700 mHz tends to be a sweet spot for OCing, and as CPU speeds exceed this speed more and more, their overclocking probablility decreases dramatically. but its like i said, its all about the luck of the CPU.🙂