I am running Windows 7 (64-bit edition) and have a 30" Dell 3007WFP monitor which runs at a screen resolution of 2560 x 1600. This works perfectly until I try to connect a second monitor, and then the screen resolution on the main monitor immediately drops to 1280x800 and I can't change it back up to the correct resolution until I disconnect the second monitor.
The graphics card is a Nvidia Quadro FX 370. This has a dual link DVI connector (to which the 30" is connected) and a single link DVI connector.
The second monitor can run at 1920x1080 and is connected using a VGA to DVI connector. Note, it does not seem to matter whether the second monitor is running at 1920x1080 or even at 800x600.
Total Available Graphics Memory: 3839MB Dedicated Video Memory: 256MB System Video Memory: 0MB Shared System Memory: 3583MB
Does anyone know if this a limitation with the video card, memory, drivers, connectors or something else?
If this is a limitation with the video card, can anyone recommend a PCI Express 16 card that would support at least this setup, but preferably support two 30" monitors both running 2560 x 1600. (I'm not into gaming etc, so it doesn't need to be very powerful)