A few months ago I had posed this question here, if it is possible to somehow make DW1650 burn @ less than 4 speed for handling poor media. All answers were in negative.
Recently I installed the unit in one of my P2 333. After burning a DVD-RW at 2.4 speed, it is burning DVD-Rs also at 2.4 speed. I do not know whether it is related to it’s self learning ability!!! Burning is with Nero 6.X.X.16 and data verification is perfect.
My unit is with BCFC RPC1 from TDB.