Quote Originally Posted by Michael View Post
The HD 5450 was passively cooled while the ASUS HD 4890 has a very large cooler.
Oh! Well, that explains that.

Hmm, the choice of passive vs active cooling is kind of annoying. Passive cooling is quieter, but then if it raises the temperature so that the CPU cooler has to work harder, then in the end it might be louder... Argh.