No, that sounds about right. You probably have the stock nVidia cooler on it, which is geared more toward being quiet than performing. 80C is perfectly acceptable however, much better than what you had before. Anyways, GPU temps are more affected by side intake fans, not front intake and rear exhaust.
Agree with these guys, I also have that exact card
In your case (lol, couldn't help it), the temperature seems normal. My card hits around 75 max but I have a fan on the side of the case blowing onto the card and also 2 extra intake fans. Yes it's a Cosmos 2 Ultra case and it's flipping massive.
So don't stress! Maybe get a side fan if your case allows it.
Ok, thank you guys for answering so quickly. I keep seeing people on forums (when googling) that say that their gpu's never get above 68c on max load, which seems like bs but I noticed that a lot of people are saying that. Every now and then you will see a person talking about 80's C. It's to weird.
To expl0itfinder: I'm happy to hear that my case improvement dropped my gpu temps as much as it was supposed to:).
To pezonator: I have a CM HAF 922 case and it has an option for a 200mm side fan. Should I get one? Would it really help? Is it worth the price (will it give enough effect for the $$?)? It would be right on top of my gpu.
To spawnkiller [sry, this forum wouldn't let me quote more than 2 people (weird..)]: Glad to hear my temps are pretty good for a reference design and OC card:).