> The reason the transfer rate is basically 1X is that it has to go across the bridge chip,
> and Mark does not have documentation of how that chip works. But it isn't transparent,
> it needs to be programmed, so whatever work around he managed to implement with
> the R500 driver did require additional work.

So this existing "work around" for the bridge chip of the R500 cards doesn't work with the bridge chip of the R600 (or R700) cards? Pity.