The person above this answered this way too soon, and without asking the proper questions to get an accurate answer for you. Lot's of things can affect your temps.
a) do you only have 1 monitor, or are you running multiple monitors from the same card
b) whats the rest of the cooling in your case like. Do you have a custom airflow setup or did you throw the card into a pre-built dell machine with a dell case.
c) whats the temperature like in your case? check your cpu temps, case temps, etc.
d) what do you idle? if you idle at 35c and spike at 75 in black ops, then no that's not normal. But do you have a very warm case to begin with and is your idle temp around 45-55?