I know this has been stated by many people throughout different threads but I just wanted to clarify that the HD4850 contrary to popular belief is actually a pretty cool card. If you were lucky enough to buy the ASUS version you get Asus SmartDoctor with it and if u merely put the fan on 60% (slight buzz) you get temps idleing mid to high 40s and under full load low 60s. I have my card in overdive at 700MHZ and memory at 1110MHZ and at full usage it goes up to the high 60s. This is MUCH cooler than my old 8800GT. For those of you that dont have Asus, just be patient your card will be cooled down soon(when they fix the fan options). The card works great and I dont like hearing that people aren't buying because it supposedly runs superhot. So if ur looking to buy the 4850 and don't want to wait, Grab the Asus for now, its good stuff.
I have heard that smart doctor works only for ASUS and that rivatuner isn't updated for the 4800s yet...however it probably will be soon...as for overdrive, after more testing, its still a bit unstable even tho it got a passing rating when overdrive tested it. I'm hoping new drivers will fix this problem...overall- badass card
There's an easy fix thru Catalyst Control Centre and you don't necessarily need those programmes to up the fan speed...google 4850 fan speed fix and you'll see several links to do it thru CCC...it is easy and works a treat...I had difficulty finding the file but that's cause I was looking in the wrong place but once I found it was a breeze...and my fan temps that were around 60 on idle are now around 42....piece of cake.
i sure know mine is HOT. i just installed it and reached 78, ouch. im trying the catalysit mod but im not sure when they changes come into affect, When you restart, when select profile, as soon as you edit the XML file, soon as you save... because i cant see a way of seeing how fast the fan is rotating.
Got a HIS HD4850 ICEQ4 Turbo, idles @ 51C - 12% Fan. default speed is 650MHz so only +25MHz over stock speed. It's a dual slot cooler plus the memory and GPU have separate heatsinks, so hopefully the RAM doesn't get cooked.
yet to find out load temp and associated fan speed.
@mcp: why you would let your card get to those temps i dont know - enjoy shopping for a new one in a year!
If I were a 4850 owner (I have a 4870x2) and really concerned about temps I would buy an aftermarket cooler - there are loads and they work very well - the 4850 Is in fact the easiest GPU to buy an aftermarket cooler for - there are so many.
I have the MSI 4850 OC 512mb that meadowla shows in pics above. I idle at 36°C and I haven't seen it go above 42°C under load yet. Of course, it's winter but I don't think the temps will change that much in summer.