You know they say there is a shortage of 40nm chips, and there may be. I find it a bit of a happy coincidence that there are still plenty of 4850's out there with price drops to match the 4770 more or less.
Now i could be forgiven for thinking maybe there isnt a shortage and they are being held back to shift the old stock of 4850's.
earlier which lends credence to boudy
, then again it could just be BS.