Why is my GTX 570 so loud?

[Dzigeezoo]

So I recently replaced my GTX 550ti with a Zotac GTX 570. My 550 was nearly silent, even at full load. The new card however, seems to have a very loud. When it's at around 55%+ it gets noticeably louder. Maybe I'm just used to hearing no noise from my PC. Temps are good too, around 37C at idle and max 80C at full load. Thoughts?

 

[refillable]

How much is the noise is? 40db-50db I guess. That's not very noisy. The 570 is much noisier than the 550 Ti so you might be not used to it.

 

[Dzigeezoo]

I'm honestly not sure how loud it is in db's. My 550 was totally silent though at full load so maybe I'm just not used to it.