If it's overclocked, no problem. If it's stock, yes. I hope you are using a good after-market cooler =)
With my old I7 970 @4.00 Ghz, I have 72° C. I can also go to 80°C (4.2Ghz), but in my experience, it's too much.
My cooler is a huge Termalright, with double Noctua FAN 12cm, similar this.
Don't forget a good thermal paster (dimension must be like a small rice grain)