I understand that there is no exact answer, however, I do think it's possible to give educated guesses and ballpark figures. Similarly how you might say there is something wrong if you can't OC E8200 to 3.4Ghz, you might say there is something off if I was seeing 80c under load. Pardon the exaggerations.
Unless your computer is in an non-air conditioned room, your idle temps are pretty high, particularly at 1.288 volts.
I have an E7500 ("crippled" E8200 series) overclocked to 4.11 GHz with a Xig Dark Knight cooler running at 1.45 volts (Intel's max recommended voltage for the 45 nm CPU's. Idle temps in an air conditioned room (ambient temps about 22 C) about 30 C. Load temps go to about 65 C in an Antec 900 case.