Tech Source Raptor 4000 Series (for Linux) - Manual (Page 57)

Raptor 4000 Series: Reference Manual
©2009 Tech Source Inc. 51 Part #65-0271-01
Appendix B DDC Resolutions
For DDC to work properly, a cable must be connected to the
Raptor 4000 Series cards and to the DDC capable display panel
prior to starting the X server.
The head closest to the PCI slot (first head) will support resolutions
up to 2048x2048 (Digital) and 2048x2048 (Analog).
The Raptor 4000-LR and Raptor 4000e-LR support resolutions up
to 1920x1200 (Digital – no Analog) on the first head; and support
up to 1920x1200 (Analog) on the second head.
NOTE: The Raptor 3500e does not support 2048x2048
(Analog).