I don't think the temps are out of control for that voltage. 22nm chips are a bit harder to cool.
Yes, however, my case got the worst airflow possible but I keep my temps under 70c at 4.7Ghz. (silver arrow sb-e with extreme ed. fans)
So I think you should try lowering the voltage and maybe re-apply the thermalpaste, because ivy and sandy bridge have a difference in temps when overclocked, but not that big. + you can compare your cooler to mine in terms of cooling performance.