Tech Source GFX 400 Series - Manual (Page 11)

Chapter 2 – Hardware Installation
2-3
2.2 Resolution Settings
For monitors that support the DDC2B/EDID (Display Data
Channel) protocol, the GFX 400 card will automatically select a
compatible resolution. To override this selection, or to change
the default resolution for monitors that do not provide DDC
information, refer to Section 3.4 and Appendix A.
The default resolution for the GFX 400 card is listed in the table
below.
Board Resolution Refresh Bits/Pixels Sync
GFX 420 Auto Detect - 8 separate/composite
GFX 440 Auto Detect - 8 separate/composite
GFX 450 Auto Detect - 8 separate/composite
If the monitor does not support the DDC2B/EDID protocol (auto-
detect), and the console resolution is not set using methods
described in Appendix A, the resolution will default to
1152x900@66Hz.