you got artic silver, trust me. Its just that distributer of it often dont put itin the packaging from artic silver. Fry's usually has it in their own packaging to.
Your high temps are likely caused by two things.
1. If you didnt clean of the gpu with alcohol and a paper towel before you but the as5 on, than you will have higher twmps.
2. Over applying the as5. Make sure you only put a very small amount on your gpu, i usually put 5 dots about 1/2 the size of a pea on the gpu, then let the mounting pressure spread it out evenly.
Hope that helps...