I don't know how much cedarmills you have binned, but I find it funny how I tested 300pcs and my best one was 8211 (not repeatable), then Kenny found 8300+ (the chip I did WR with is not mine) from 20pcs and now you
If your chip does 8300+ then it most likely does not have an FSB wall so there is a lot of potential still to be discovered. Good find