kodt said:
The 4850 does get very hot, so it is best to set the fan speed manually in ATI overdrive. 40-45% kept mine cool for almost all games in a small case. In a good case like the antec three hundred it would be better.
In my Antec 300 case (I just used a can of air yesterday to clean things out) the 4850 idles at around 50-54C if you're not doing anything, maybe 60C if you're doing really CPU-intensive stuff. I think that might have been at 35% fan, which is about as high as I can get while still remaining quiet. If I run something like left 4 dead, I have to put it up to like 60% or more to keep it at or below 70C. If I forget to turn the fan to 50% or more, I've had it jump up to 97C-101C. DO NOT WANT.
This is with the crappy stock cooler, though, and I only have the top and top back case fans. I think I should at least get a fan to fit in the front bottom as well...I could do one on the side in front of the video card, but I'm guessing that the big copper heatsink people mentioned earlier wouldn't fit if I had a fan on the outside edge of the card.
The 4890 looks cool, but I've heard it's louder (and hotter?) than the 4850...