I thought I would share some home-made results with respect to the 4890.
My brief system setup info:
Intel Q9450 @ 3.6GHz
Asus P5Q-E Mobo
8GB DDR2-1066 OCZ Reaper RAM
300GB WD VelociRaptor
640GB WD Caviar Black
640GB WD Caviar Black
500GB WD Caviar Blue
1GB Sapphire 4890 @ 950/4300
750W PCP&C Silencer PSU
Antec 1200 Case w/ 5 x 120mm fans + 250mm top fan
In performance mode for 3DMark Vantage, I got about 12500 points. In 3DMark 2006 I got just under 19000 points.
The default fan speed on this card was 50% which is so loud you will go deaf. 20% is the minimum that CCC allows. Anywhere between 20 and 25% fan speed, you will not hear the 4890. At 30% there is the sound of rushing air. Anything past 30% fan speed makes a whining noise, louder and louder.
At 20% fan speed, the card idles at about 70 and loads at 85. At 25% fan speed it idles at about 60 and loads at 80. Therefore, there is a good reason why ATI decided to make the default fan speed 50%. Someone has also stated that ATI recommends keeping the fan at 100% for overclocking. That is obviously not needed...but you may want to invest in an aftermarket cooler.
I'm going to buy an Arctic Cooling Twin Turbo cooler next week for the card so I can silence and cool it better. I had one of those coolers on my old 512MB 4870 and it did wonders there.
I had to use the Catalyst 9.4 beta drivers because 9.3 and below don't support the 4890 while the drivers supplied on my Sapphire disk went nuts. Well, the drivers worked but, the CCC get into an infinite loop of trying to load on startup, self-closing, and then self-trying to open again.
Any other results guys? Any thoughts? Questions?