5850's are a little quieter than a 4890.
Which from what I have heard myself is kinda near a 285.
Get 2 of the revision V2 5770's.
Those things at 100% dont break 30 dBa.
http://www.newegg.com/Product/Produc...-864-_-Product
For a single gpu solution, the 5870 is a little louder than a 5850, just judging it don't quote me, but, my old 5870 would sound the same as my cpu fans when it was at 70%.
So 5870 at 70% was ~40dBa
100% was a bit louder.
Which from what I have heard myself is kinda near a 285.
Get 2 of the revision V2 5770's.
Those things at 100% dont break 30 dBa.
http://www.newegg.com/Product/Produc...-864-_-Product
For a single gpu solution, the 5870 is a little louder than a 5850, just judging it don't quote me, but, my old 5870 would sound the same as my cpu fans when it was at 70%.
So 5870 at 70% was ~40dBa
100% was a bit louder.