Thinking of a 4870 over a 4850...

...have a 19" LCD now (1280x1024) and obviously either card will work fine. However, I will probably get a 24" in the next 6 months.

Biggest issue is noise. I don't care if its a manual or automatic utility, but I really want the card to be quiet at the desktop/doing 2D, and I don't care if its loud during games or 3D apps. Is the 4870 going to produce less noise in 2D use than the 4850?

I want the card, but am a little nervous about the noise.

Thanks!

When you say auto, is this the card itself controlling the speed, or drivers?

My friend got an ATI 4850 and I played with the bundled utility with a 'smart' setting and it seemed to work well.

I like the idea of the fan being at ~20% in Windows (Word, Excel, /b/ (j/k), etc.) and as high as it wants during games.

Thanks!