had no problem with the bmax testgame and beside the GF6800 Mac Systems only had ATIs for ages ...
NVidia have some extensions for opengl which make them faster but in a general game you won't have use for them as you would need to write the same stuff twice for nv and non nv :)
and the flushing stuff fully depends on drivers, there are quite a lot forceware drivers that have similar problems and even worse problems.
Best thing to get is a GF6600 on AGP if you can afford it.
Blasts away the Radeon 9800 and has shader 3 support, something ATI doesn't have in any card :)
NVidia have some extensions for opengl which make them faster but in a general game you won't have use for them as you would need to write the same stuff twice for nv and non nv :)
and the flushing stuff fully depends on drivers, there are quite a lot forceware drivers that have similar problems and even worse problems.
Best thing to get is a GF6600 on AGP if you can afford it.
Blasts away the Radeon 9800 and has shader 3 support, something ATI doesn't have in any card :)