Originally Posted by netllama
It sounds like you may be hitting bandwidth limits of the PCI bus.
I don't believe so. If that were the case then why does the configuration of 3 x 2 TwinView exhibit good performance ? (3 Xinerama 'screens', each of which is a TwinView configuration of two heads).
And why does the 3x1 Xinerama configuration using 'nv' with three cards exhibit decent performance ?
And why do tests run on the AGP connected heads run much worse when there is a PCI card in the XInerama config ?